CN219878669U - Sealing connection device for extracting liquid - Google Patents

Abstract

The utility model discloses a sealing connection device for extracting liquid, which comprises a shell, a sealing piece, an elastic piece and a puncture piece, wherein a liquid inlet and a liquid outlet are formed in the shell; the sealing element is slidably arranged in the shell, the elastic element is arranged in the shell and is used for forcing the sealing element to slide in the direction close to the liquid outlet until the liquid outlet is sealed by the sealing element; the puncture part is arranged on the puncture member, and a channel is arranged in the puncture member; one end of the channel penetrates through the puncture part, and the other end of the channel is communicated with the liquid inlet; when the front end of the needleless injector is inserted into the liquid outlet, the front end of the injector forces the sealing element to slide in a direction away from the liquid inlet, so that the channel, the liquid inlet, the liquid outlet and the injector are communicated sequentially. The sealing connection device for extracting liquid is convenient to use, high in safety and high in extraction efficiency.

Description

Sealing connection device for extracting liquid

Technical Field

The utility model relates to the technical field of sealing equipment, in particular to a sealing connection device for extracting liquid.

Background

Currently, the venous indwelling rate of hospitalized patients is about 70%, and nurses perform at least two times per day of tube flushing operation on indwelling needles for such patients (namely, flushing with 5% glucose injection and then flushing with normal saline/heparin saline for tube sealing), so that the operation of tube flushing on indwelling needles is performed hundreds of times per day in each hospitalized ward area, and the operation times are quite high.

In the prior art, most hospitals generally use a 5ml syringe with a needle to draw physiological saline from 100ml bagged physiological saline to perform a tube-sealing operation on the indwelling needle, however, the following defects mainly exist in the manner: (1) In the process of puncturing by frequently using a needle, a nursing staff is easy to generate needle puncture and has potential safety hazard; (2) The needle frequently punctures the rubber sealing plug of the bagged physiological saline, and rubber particles easily fall into the physiological saline, so that the human body is operated along with the sealing tube, and potential safety hazards exist; (3) Because the needle is thinner, the speed of directly extracting through the needle is low, and the extraction efficiency is low; (4) The rubber sealing plug of the bagged physiological saline is exposed, so that the risk of cross infection exists, and the requirements of hospital feel are not met.

Disclosure of Invention

An object of the present utility model is to provide a sealing connection device for extracting liquid, which is convenient to use, high in safety and high in extraction efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the sealing connection device for extracting the liquid comprises a shell, a sealing piece, an elastic piece and a puncture piece, wherein a liquid inlet and a liquid outlet are formed in the shell; the sealing piece is slidably arranged in the shell, the elastic piece is arranged in the shell, and the elastic piece is used for forcing the sealing piece to slide in a direction close to the liquid outlet until the liquid outlet is sealed by the sealing piece; the puncture part is arranged on the puncture member, and a channel is arranged in the puncture member; one end of the channel penetrates through the puncture part, and the other end of the channel is communicated with the liquid inlet; when the front end of the needleless injector is inserted into the liquid outlet, the front end of the injector forces the sealing element to slide in a direction away from the liquid inlet, so that the channel, the liquid inlet, the liquid outlet and the injector are communicated sequentially.

Preferably, the axis of the liquid inlet coincides with the axis of the liquid outlet, and a sealing surface is formed between the inner side surface of the liquid outlet and the inner side surface of the shell; the sealing piece comprises a first pipe body, a second pipe body and a sealing part; the first pipe body is axially and slidably connected to the liquid inlet, and the outer wall of the first pipe body and the inner wall of the liquid inlet form a seal; the second pipe body is axially and slidably connected to the liquid outlet, and the outer wall of the second pipe body and the inner wall of the liquid outlet form a seal; the sealing part is arranged between the first pipe body and the second pipe body, a first through hole for communicating the first pipe body is formed in the sealing part at a position corresponding to the sealing surface, and a second through hole is formed in the second pipe body, which is close to one end of the sealing part, in an inward penetrating manner; the elastic piece is used for forcing the sealing piece to move towards the direction close to the liquid outlet until the sealing part and the sealing surface form a seal; when the front end of the injector is inserted into the liquid outlet, the front end of the injector forces the second pipe body to slide in the direction close to the liquid inlet until the channel, the liquid inlet, the first pipe body, the first through hole, the second pipe body and the injector are communicated in sequence.

Preferably, the sealing surface and the sealing part are both in conical structures at the positions corresponding to the sealing surface.

Preferably, the sealing part is axially and slidably connected to the inner side wall of the shell, and a seal is formed between the sealing part and the inner side wall of the shell.

Preferably, the elastic piece is a spiral spring, the spiral spring is sleeved on the first pipe body, and the spiral spring is used for forcing the sealing part to slide towards the direction close to the liquid outlet.

Preferably, when the sealing part and the sealing surface form a seal, one end of the second pipe body, which is far away from the first pipe body, is positioned in the liquid outlet.

Preferably, the distance between the end of the second tube body far from the first tube body and the outer end of the liquid outlet is one quarter to one half of the length of the front end of the injector.

Preferably, the puncture member is a tubular structure, the puncture part is formed at one end of the tubular structure, and the other end of the tubular structure is detachably connected to the liquid inlet; and a thrust part is arranged on the outer wall of the tubular structure.

Preferably, the sealing connection device for extracting liquid further comprises a sealing cap and a flexible connection piece, the sealing cap is detachably covered on the liquid outlet, and the sealing cap is connected with the thrust portion through the flexible connection piece.

Preferably, the sealing connection device for extracting liquid further comprises a protective sleeve, and the protective sleeve is detachably sleeved on the puncture member.

Compared with the prior art, the utility model has the beneficial effects that: when the device is used, the physiological saline is extracted as an example, and the physiological saline can enter the liquid inlet through the channel only by puncturing the rubber sealing plug on the bagged physiological saline through the puncture part. Under the action of the elastic piece, the elastic piece forces the sealing piece to slide towards the direction close to the liquid outlet, so that the liquid outlet is sealed through the sealing piece, and the physiological saline is prevented from leaking. When the normal saline needs to be extracted, the front end of the injector without the needle is inserted into the liquid outlet, and the front end of the injector can push the sealing element to slide in the direction away from the liquid inlet, so that the channel, the liquid inlet, the liquid outlet and the injector are sequentially communicated, and the piston of the injector can be pulled to extract the normal saline.

That is, when the sealing connection device is adopted to extract normal saline, the normal saline can be directly extracted through the injector without a needle, the use is convenient, the extraction efficiency is high, medical staff cannot be stabbed, and the safety is higher; in addition, in the process of extracting a whole bag of normal saline, the puncture part only needs to be punctured once, and the size of the puncture part is far larger than that of the needle head, so that rubber particles can be effectively prevented from falling into the normal saline, and the rubber particles cannot be brought into a human body, and the safety is higher.

Drawings

Fig. 1 is a perspective view of a sealing connection device for extracting liquid according to the present utility model.

Fig. 2 is an exploded view of the sealing connection for drawing liquid of fig. 1 provided by the present utility model.

Fig. 3 is a cross-sectional view of the housing of fig. 2 provided by the present utility model.

Fig. 4 is an enlarged view of the seal and spring of fig. 2 provided by the present utility model.

FIG. 5 is an enlarged view of the piercing member of FIG. 2 provided by the present utility model.

FIG. 6 is an enlarged view of the seal cap and flexible connection unit of FIG. 2 provided by the present utility model.

Fig. 7 is a schematic diagram of the operation of the sealing connection device for extracting liquid in fig. 1 according to the present utility model.

Fig. 8 is an enlarged view of a portion of the fig. 7 article at I provided by the present utility model.

Fig. 9 is another state diagram of the structures of fig. 8 provided by the present utility model.

In the figure: 1. a housing; 11. a liquid inlet; 12. a liquid outlet; 13. sealing surfaces; 2. a seal; 21. a first tube body; 22. a second tube body; 221. a second through hole; 23. a sealing part; 231. a first through hole; 3. an elastic member; 4. a piercing member; 41. a puncture part; 42. a channel; 43. a thrust portion; 431. a first connection hole; 5. a sealing cap; 51. a second connection hole; 6. a flexible connection member; 7. a protective sleeve; 100. a syringe.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, 2 and 7 to 9, one embodiment of the present utility model provides a sealing connection device for extracting liquid, which comprises a housing 1, a sealing member 2, an elastic member 3 and a piercing member 4, wherein a liquid inlet 11 and a liquid outlet 12 are arranged on the housing 1; the sealing element 2 is slidably arranged in the shell 1, the elastic element 3 is arranged in the shell 1, and the elastic element 3 is used for forcing the sealing element 2 to slide towards the direction close to the liquid outlet 12 until the liquid outlet 12 is sealed by the sealing element 2; the puncture part 41 is arranged on the puncture part 4, and a channel 42 is arranged in the puncture part 4; one end of the channel 42 penetrates through the puncture part 41, and the other end of the channel 42 is communicated with the liquid inlet 11; when the front end of the needleless syringe 100 is inserted into the liquid outlet 12, the front end of the syringe 100 forces the sealing member 2 to slide away from the liquid inlet 11, thereby allowing communication among the passage 42, the liquid inlet 11, the liquid outlet 12 and the syringe 100 in this order.

The working principle of the sealing and connecting device for extracting liquid will be described below by taking the extraction of physiological saline as an example only: as shown in fig. 7 to 9, the puncture part 41 punctures the rubber sealing plug on the bagged physiological saline, and the physiological saline can enter the liquid inlet 11 through the channel 42. Under the action of the elastic member 3, namely, the elastic member 3 forces the sealing member 2 to slide in a direction approaching the liquid outlet 12, so that the liquid outlet 12 is sealed by the sealing member 2 to prevent physiological saline from leaking. When the normal saline needs to be extracted, only the front end of the needleless injector 100 is required to be inserted into the liquid outlet 12, and the front end of the injector 100 can push the sealing element 2 to slide in the direction away from the liquid inlet 11, so that the channel 42, the liquid inlet 11, the liquid outlet 12 and the injector 100 are sequentially communicated, and the piston of the injector 100 can be pulled to extract the normal saline.

That is, when the sealing connection device is used for pumping normal saline, the normal saline can be directly pumped through the needleless injector 100, so that the use is convenient, the pumping efficiency is high, medical staff cannot be stabbed, and the safety is higher; in addition, in the process of extracting a whole bag of physiological saline, the puncture part 41 only needs to be punctured once, and the size of the puncture part 41 is far larger than that of the needle head, so that rubber particles can be effectively prevented from falling into the physiological saline, and the rubber particles cannot be brought into a human body, and the safety is higher.

In some embodiments of the present utility model, as shown in fig. 3, the axis of the liquid inlet 11 coincides with the axis of the liquid outlet 12, and a sealing surface 13 is formed between the inner side surface of the liquid outlet 12 and the inner side surface of the housing 1.

As shown in fig. 4 and 8, the seal member 2 includes a first tube body 21, a second tube body 22, and a seal portion 23; the first pipe body 21 is axially and slidably connected to the liquid inlet 11, and the outer wall of the first pipe body 21 and the inner wall of the liquid inlet 11 form a seal; the second pipe body 22 is axially and slidably connected to the liquid outlet 12, and the outer wall of the second pipe body 22 and the inner wall of the liquid outlet 12 form a seal; the sealing part 23 is arranged between the first pipe body 21 and the second pipe body 22, a first through hole 231 for communicating the first pipe body 21 is arranged on the sealing part 23 corresponding to the sealing surface 13, and a second through hole 221 is internally penetrated on the outer wall of one end, close to the sealing part 23, of the second pipe body 22; the elastic member 3 is used to force the sealing member 2 to move in a direction approaching the liquid outlet 12 until a seal is formed between the sealing portion 23 and the sealing surface 13 (as shown in fig. 8). When the front end of the syringe 100 is inserted into the liquid outlet 12 (as shown in fig. 7), the front end of the syringe 100 forces the second tube 22 to slide in a direction approaching the liquid inlet 11 until the channel 42, the liquid inlet 11, the first tube 21, the first through hole 231, the second through hole 221, the second tube 22 and the syringe 100 are sequentially communicated, that is, when the second through hole 221 moves to be separated from the liquid outlet 12 (as shown in fig. 8), the piston of the syringe 100 is pulled again, and the physiological saline can sequentially enter the syringe 100 through the channel 42, the liquid inlet 11, the first tube 21, the first through hole 231, the second through hole 221 and the second tube 22, thereby completing the extraction. When the syringe 100 is pulled out, the sealing portion 23 and the sealing surface 13 are again sealed by the elastic member 3 (as shown in fig. 8) to prevent leakage of physiological saline.

Referring to fig. 3, 4 and 8, in some embodiments of the present utility model, in order to provide a sealing effect between the paste sealing surface 13 and the sealing portion 23, the sealing surface 13 and the sealing portion 23 are both tapered at positions corresponding to the sealing surface 13.

Referring to fig. 8 and 9, in some embodiments of the present utility model, in order to prevent the elastic member 3 from contacting physiological saline, the sealing portion 23 is axially slidably connected to the inner sidewall of the housing 1, and a seal is formed between the sealing portion 23 and the inner sidewall of the housing 1.

Referring to fig. 8 and 9, in some embodiments of the present utility model, in order to facilitate the installation of the elastic member 3, the elastic member 3 is a coil spring, the coil spring is sleeved on the first tube 21, and the coil spring is used to force the sealing portion 23 to slide in a direction approaching the liquid outlet 12.

Referring to fig. 7, in some embodiments of the present utility model, when a seal is formed between the sealing portion 23 and the sealing surface 13, an end of the second tube 22 remote from the first tube 21 is located inside the liquid outlet 12. That is, only when the front end of the syringe 100 is completely inserted into the liquid outlet 12, the front end of the syringe 100 pushes the second tube 22 to be conducted. Therefore, when the front end of the syringe 100 is just inserted into the liquid outlet 12, the front end of the syringe 100 does not push the second tube 22 immediately, i.e., the physiological saline is not discharged immediately, so that leakage of the physiological saline due to conduction of the syringe 100 without stable insertion can be avoided. Preferably, the distance H between the end of the second tube 22 away from the first tube 21 and the outer end of the liquid outlet 12 is one-fourth to one-half of the length L of the front end of the syringe 100.

Referring to fig. 5, in some embodiments of the present utility model, the piercing member 4 has a tubular structure, the piercing portion 41 is formed at one end of the tubular structure, and the other end of the tubular structure is detachably connected to the liquid inlet 11; the outer wall of the tubular structure is provided with a thrust portion 43. The piercing portion 41 is facilitated to pierce the rubber sealing plug by the thrust portion 43. The tubular structure (i.e. the puncture element 4) is detachably connected with the liquid inlet 11, so that the penetration element can be separated when the penetration element is discarded. It should be noted that, the detachable manner between the tubular structure and the liquid inlet 11 is not limited in the present utility model, for example, as shown in fig. 7, the tubular structure is interference fit in the liquid inlet 11, so that the detachment can be achieved by plugging.

Referring to fig. 1 and 6, in some embodiments of the present utility model, the sealing connection device for extracting a liquid further includes a sealing cap 5 and a flexible connection member 6, the sealing cap 5 is detachably covered on the liquid outlet 12, and the sealing cap 5 is connected to the thrust portion 43 through the flexible connection member 6. After the syringe 100 is pulled out, the liquid outlet 12 can be effectively sealed through the sealing cap 5, so that cross infection is prevented, and the requirements of hospital feel are met. Meanwhile, the sealing cap 5 is connected with the thrust portion 43 through the flexible connection member 6 (e.g., connection string, connection band, wire, etc.), so that the sealing cap 5 can be prevented from falling or being lost. The sealing cap 5 is preferably an alcohol cap, i.e. the sealing cap 5 is internally provided with a material capable of adsorbing alcohol, so that after the sealing cap 5 is covered each time, the liquid outlet 12 can be disinfected, and the safety is higher. The sealing cap 5 is not limited to be removed, and may be removed by, for example, a snap fit, a screw connection, or an interference fit. The manner of fixing the flexible connector 6 is not limited, and for example, the thrust portion 43 is provided with a first connection hole 431, the sealing cap 5 is provided with a second connection hole 51, and both ends of the flexible connector 6 are respectively tied to the first connection hole 431 and the second connection hole 51 (as shown in fig. 1).

Referring to fig. 1 and 2, in some embodiments of the present utility model, the sealed connection device for extracting a liquid further includes a protective sleeve 7, where the protective sleeve 7 is detachably sleeved on the puncture element 4. The protection sleeve 7 can protect the puncture part 41, so that the puncture part 41 can be prevented from puncturing the outer package or puncturing the garbage bag when being discarded.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The sealing connection device for extracting the liquid is characterized by comprising a shell, a sealing element, an elastic element and a puncture element, wherein the shell is provided with a liquid inlet and a liquid outlet; the sealing piece is slidably arranged in the shell, the elastic piece is arranged in the shell, and the elastic piece is used for forcing the sealing piece to slide in a direction close to the liquid outlet until the liquid outlet is sealed by the sealing piece; the puncture part is arranged on the puncture member, and a channel is arranged in the puncture member; one end of the channel penetrates through the puncture part, and the other end of the channel is communicated with the liquid inlet; when the front end of the needleless injector is inserted into the liquid outlet, the front end of the injector forces the sealing element to slide in a direction away from the liquid inlet, so that the channel, the liquid inlet, the liquid outlet and the injector are communicated sequentially.

2. The sealed connection device for extracting a liquid according to claim 1, wherein an axis of the liquid inlet coincides with an axis of the liquid outlet, and a sealing surface is formed between an inner side surface of the liquid outlet and an inner side surface of the housing;

the sealing piece comprises a first pipe body, a second pipe body and a sealing part; the first pipe body is axially and slidably connected to the liquid inlet, and the outer wall of the first pipe body and the inner wall of the liquid inlet form a seal; the second pipe body is axially and slidably connected to the liquid outlet, and the outer wall of the second pipe body and the inner wall of the liquid outlet form a seal; the sealing part is arranged between the first pipe body and the second pipe body, a first through hole for communicating the first pipe body is formed in the sealing part at a position corresponding to the sealing surface, and a second through hole is formed in the second pipe body, which is close to one end of the sealing part, in an inward penetrating manner;

the elastic piece is used for forcing the sealing piece to move towards the direction close to the liquid outlet until the sealing part and the sealing surface form a seal; when the front end of the injector is inserted into the liquid outlet, the front end of the injector forces the second pipe body to slide in the direction close to the liquid inlet until the channel, the liquid inlet, the first pipe body, the first through hole, the second pipe body and the injector are communicated in sequence.

3. The sealing connection for extracting fluid of claim 2, wherein the sealing surface and the portion of the sealing portion corresponding to the sealing surface are each of a tapered configuration.

4. The sealed connection device for extracting fluid of claim 2, wherein the sealing portion is axially slidably connected to the inner side wall of the housing and a seal is formed between the sealing portion and the inner side wall of the housing.

5. The sealing and connecting device for extracting fluid as defined in claim 4, wherein said elastic member is a coil spring, said coil spring is sleeved on said first tube, and said coil spring is used for forcing said sealing portion to slide in a direction approaching said fluid outlet.

6. The sealed connection device for extracting fluid of claim 2, wherein an end of said second tube body remote from said first tube body is positioned inside said liquid outlet when a seal is formed between said sealing portion and said sealing surface.

7. The sealing connection for withdrawing liquid as claimed in claim 2, wherein a distance between an end of said second tube body remote from said first tube body and an outer end of said liquid outlet is one-fourth to one-half of a length of a front end of said syringe when a seal is formed between said sealing portion and said sealing surface.

8. The sealing connection for extracting fluid of claim 1, wherein said piercing member is a tubular structure, said piercing portion being formed at one end of said tubular structure, the other end of said tubular structure being detachably connected to said fluid inlet; and a thrust part is arranged on the outer wall of the tubular structure.

9. The sealing-connecting device for extracting liquid as defined in claim 1, further comprising a sealing cap and a flexible connecting member, wherein the sealing cap is detachably covered on the liquid outlet, and the sealing cap is connected with the thrust portion through the flexible connecting member.

10. The sealed connection for extracting fluid of claim 1, further comprising a protective sleeve removably sleeved over said piercing member.