CN118022102A - Infusion apparatus capable of preventing connector from being polluted - Google Patents

Abstract

The invention relates to the technical field of infusion apparatuses, in particular to an infusion apparatus capable of preventing a connector from being polluted. The infusion device comprises a rear end infusion hose with a connector at the front end, liquid medicine is connected through the rear end infusion hose, the connector is matched with a trocar for use, the trocar comprises a positive pressure connector, a positive pressure valve is arranged at one end of the positive pressure connector, the connector comprises a connector main body, the rear end of the connector main body is communicated with the rear end infusion hose, and a connecting end is arranged at the front end of the connector main body. The protection body is of an elastic structure, so that the penetrating opening can be scaled, the scaling area of the penetrating opening is increased according to the increase of the pressure range of the positive pressure valve, the scaling area of the penetrating opening can be reduced according to the decrease of the pressure range of the positive pressure valve, and the normal penetrating opening is contracted to a closed state, so that the space in the outer tube is sealed by the sliding body, and the protection of the connector is finished, and the connector is prevented from being polluted.

Description

Infusion apparatus capable of preventing connector from being polluted

Technical Field

The invention relates to the technical field of infusion apparatuses, in particular to an infusion apparatus capable of preventing a connector from being polluted.

Background

Current devices for infusion include, but are not limited to:

The infusion apparatus, see the figure 1, it includes back end infusion hose and front end infusion hose that connect through the union joint, the end of the back end infusion hose has puncture outfits, there are drip cans on the route of the back end infusion hose circulation liquid, the back end infusion hose locates between union joint and drip cans and has flow rate regulator, then front end infusion hose front end has intravenous infusion needles, connect with drip bottle by puncture outfits while using, then the liquid medicine in the drip bottle flows into the front end infusion hose through the back end infusion hose, infuse to the vein by the intravenous infusion needles, this kind of mode is suitable for the patient that infuses in the short term times not much;

The trocar, see figure 2, comprises a positive pressure joint, one end of the positive pressure joint is provided with a positive pressure valve, the other end of the positive pressure joint is provided with an extension tube, the extension tube is used for connecting a transparent tee joint, the front end of the transparent tee joint is provided with a catheter, then a steel needle is arranged in the catheter, the tail of the steel needle is provided with a needle holding handle, at present, when a patient is in trocar infusion, the patient is not in a needle joint (the steel needle is pulled out after the auxiliary catheter is inserted into a vein, the catheter is connected to the vein in an indwelling mode), but the liquid medicine is still sourced from a dropping bottle, so that the rear end infusion hose of the infusion set and other structures (such as a puncture outfit, a dropping pot and a flow rate regulator) arranged on the rear end infusion hose are needed, and the intravenous infusion set and the front end infusion hose of the infusion set are detached (shown by dotted arrows in the figure), the connector is left to be connected with the trocar (shown by the solid arrows in the figure), the above is the working process of trocar infusion, and the trocar is suitable for the patient in long-term infusion.

However, the infusion apparatus needs to be removed every time the patient checks, as shown in fig. 4, the positive pressure valve is detached from the connector (shown by the dotted arrow in the figure), then the non-detached iv needle and the front end infusion hose are found (which are detached before and need to be opened for preventing puncture wound), the new iv needle and the front end infusion hose are connected with the connector which is used by the patient all the time (shown by the solid arrow in the figure), when the patient leaves, the connector is prevented from being polluted, the patient returns to the ward, the iv needle and the front end infusion hose are detached again, the connector is connected with the trocar for infusion, and when the patient leaves again, the set of iv needle and the front end infusion hose need to be detached.

Therefore, the invention provides an infusion apparatus for preventing the pollution of a connector, which is characterized in that a plug is used for plugging the connector to replace a new intravenous infusion needle and a front end infusion hose, thereby avoiding waste; in addition, the way of blocking the connector by the intravenous infusion needle and the front end infusion hose is dangerous too, because the intravenous infusion needle is pricked to a person in clinic, cross infection is easy, and the risk of being pricked is also caused.

Disclosure of Invention

The invention aims to provide an infusion apparatus capable of preventing a connector from being polluted, so as to solve the problems in the prior art.

In order to achieve the above object, there is provided an infusion apparatus for preventing contamination of a connector, which comprises a rear end infusion hose with a connector at the front end, wherein a liquid medicine is connected through the rear end infusion hose, the connector is used with a trocar, the trocar comprises a positive pressure connector, one end of the positive pressure connector is provided with a positive pressure valve, the connector comprises a connector main body, the rear end of the connector main body is communicated with the rear end infusion hose, and the front end of the connector main body is provided with a connecting end;

The connecting end comprises an inner tube which is communicated with the rear-end transfusion hose;

The connecting end further comprises an outer tube, and the outer tube is arranged outside the inner tube and is connected with the connector main body but not communicated with the connector main body;

The connector also comprises a protective cover, wherein the protective cover is arranged outside the outer tube and is used for plugging the space in the outer tube after the positive pressure valve is detached.

As a further improvement of the technical scheme, the protective cover is covered outside the outer tube so as to seal the inner space of the protective cover;

when the positive pressure valve is connected, the protective cover is separated from the outer tube.

As a further improvement of the technical proposal, the connecting end comprises a sliding body which is a tubular structure with an inner diameter adapted to the outer diameter of the outer tube and is used for sliding connection with the outer tube;

The protective cover further comprises a protective body, the protective body is arranged at the front end of the sliding body, the protective body is of a round elastic structure, and the outer edge of the protective body is in seamless connection with the outer edge of the sliding body;

a through hole is formed in the center of the protective body, the through hole can be scaled under the action of the positive pressure valve, and the scaling area of the through hole is increased according to the increase of the pressure range of the positive pressure valve and is decreased according to the decrease of the pressure range of the positive pressure valve;

The stoma normally contracts to a closed condition.

As a further improvement of the technical scheme, the front end of the inner side of the sliding body is provided with a flaring slot.

As a further improvement of the technical proposal, the friction force between the sliding body and the outer tube is larger than the self gravity of the sliding body.

As a further improvement of the technical scheme, after the positive pressure valve is disassembled, the sliding body is positioned at the maximum position of the rear end capable of sliding.

As a further improvement of the technical scheme, the inside of the protective body is hollow to form a cavity;

A plurality of elastic bodies are arranged in the cavity around the circle center of the protective body;

the elastic body comprises a triangular head, the tip end of the triangular head faces the through hole, and a tail plate is arranged on one side, far away from the tip end, of the triangular head;

the both sides of tailboard all are provided with the curb plate, the one end and the slide body of curb plate are connected fixedly, and the other end is connected with the triangle head, and the tailboard can move about for the curb plate.

Compared with the prior art, the invention has the beneficial effects that:

In the infusion apparatus for preventing the connector from being polluted, the protecting body is of an elastic structure, so that the penetrating opening can be scaled, the scaling area of the penetrating opening is increased according to the increase of the pressure range of the positive pressure valve, the scaling area of the penetrating opening can be reduced according to the decrease of the pressure range of the positive pressure valve, and the normal penetrating opening is contracted to a closed state, so that the space in the outer tube is sealed by means of the sliding body, the connector is protected, and the connector is prevented from being polluted.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an infusion set according to the present invention;

FIG. 2 is a schematic view of a partial structure of a trocar of the present invention;

FIG. 3 is a schematic illustration of the principle of operation of the infusion set and trocar of the present invention;

FIG. 4 is a schematic diagram of the working principle of the infusion set and the connector of the present invention;

FIG. 5 is a schematic view of the structure of the connector and positive pressure connector of the present invention;

FIG. 6 is a schematic view of the structure of the connector assembly of the present invention;

FIG. 7 is a schematic view of a protector according to the present invention;

FIG. 8 is a schematic diagram of the working principle of the protector according to the present invention;

FIG. 9 is a schematic side view of the protective body of the present invention in a protected state;

FIG. 10 is a schematic side view of a protector incorporating an elastomer according to the present invention;

FIG. 11 is a schematic view of an elastomer structure of the present invention;

fig. 12 is a schematic view of the working principle of the elastomer of the present invention.

The meaning of each reference sign in the figure is:

110. a rear end transfusion hose; 111. a puncture outfit; 120. a front end transfusion hose; 121. an intravenous infusion needle; 112. dropping a kettle; 113. a flow rate regulator;

200. A connector; 210. a connector body; 220. a connection end; 221. an inner tube; 222. an outer tube; 2221. a chute; 230. a protective cover; 231. a sliding body; 2311. a slide block; 2312. a flaring slot; 232. a protective body; 2321. a through hole; 233. an elastomer; 2331. a triangular head; 2332. a tail plate; 2333. a side plate;

310. A positive pressure joint; 320. a positive pressure valve; 321. an empty rod body; 322. a connecting rod body; 330. and (5) extending the tube.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, after the front end infusion hose 120 is detached, the connector 200 of the present infusion apparatus does not have a protection measure, so that only a new front end infusion hose 120 is forced to be detached again and connected to the connector 200;

As shown in fig. 3 and 4, the connector 200 of the infusion apparatus is used in combination with a trocar, and as shown in fig. 2, the trocar includes a positive pressure connector 310, one end of the positive pressure connector 310 is provided with a positive pressure valve 320, the other end is provided with an extension tube 330, the extension tube 330 is used for connecting a transparent tee, the front end of the transparent tee is provided with a catheter, then a steel needle is placed in the catheter, and the tail of the steel needle is provided with a needle holding handle.

The improvement of the present invention is that the connector 200 is based on the connector shown in fig. 5, the connector 200 comprises a connector main body 210, the rear end of the connector main body 210 is communicated with a rear end transfusion hose 110, and the front end of the connector main body 210 is provided with a connecting end 220; referring to fig. 6, the connection end 220 includes an inner tube 221, the inner tube 221 communicating with the rear-end infusion hose 110; the connecting end 220 further comprises an outer tube 222, and the outer tube 222 is arranged outside the inner tube 221 and is connected with the connector main body 210, but is not communicated with the connector main body; connector 200 further includes a protective cap 230, wherein protective cap 230 is disposed outside outer tube 222, and is used to block the space inside outer tube 222 after positive pressure valve 320 is detached.

In the first embodiment, after the positive pressure valve 320 is disassembled, the protection cover 230 is covered outside the outer tube 222 to block the inner space thereof; when the positive pressure valve 320 is connected again, the protection cap 230 is removed, the protection cap 230 is separated from the outer tube 222, and then the positive pressure valve 320 is connected to a gap between the inner tube 221 and the outer tube 222, so that the positive pressure valve 320 communicates with the inner tube 221.

In the second embodiment, referring to fig. 6, the connection end 220 includes a sliding body 231, the sliding body 231 is a tubular structure with an inner diameter adapted to an outer diameter of the outer tube 222, and can be slidably connected with the outer tube 222, for this purpose, a sliding block 2311 is disposed inside the sliding body 231, a sliding slot 2221 is disposed outside the outer tube 222, the sliding block 2311 slides in the sliding slot 2221, so that the sliding body 231 can slide relative to the outer tube 222, and here, it should be noted that one sliding block 2311 is connected with one sliding slot 2221 to form a sliding system, and the sliding body 231 and the outer tube 222 can be connected by a plurality of sliding systems.

In addition, referring to fig. 6, the protection cover 230 further includes a protection body 232, the protection body 232 is disposed at the front end of the sliding body 231, the protection body 232 is of a circular elastic structure, and an outer edge of the protection body 232 is seamlessly connected with an outer edge of the sliding body 231, for example: bonding, stitching, etc.; and the center of the protecting body 232 is provided with a through hole 2321, because the protecting body 232 is of an elastic structure, the through hole 2321 can be scaled, the scaling area of the through hole 2321 is increased according to the increase of the pressure range of the positive pressure valve 320, and in the same way, the scaling area of the through hole 2321 can be reduced according to the decrease of the pressure range of the positive pressure valve 320, and the normal through hole 2321 is contracted to a closed state, so that the space in the outer tube 222 is sealed by the sliding body 231.

Here, the sliding body 231 slides with the outer tube 222 for the following purpose:

The sliding body 231 is slid forward relative to the outer tube 222 to a maximum position of the sliding groove 2221, as shown in fig. 7, where a length L of the sliding body 231 not contacting the side of the outer tube 222 is greater than a radius R of the protecting body 232, so that a space is provided for folding the protecting body 232 inside the sliding body 231, and a gap between the inner tube 221 and the outer tube 222 is avoided.

When in use, in order to avoid waste, the front end infusion hose 120 and the intravenous infusion needle 121 are packaged separately from the infusion apparatus in the present embodiment, so that the packaging bag with the front end infusion hose 120 and the intravenous infusion needle 121 is not required to be unpacked when in use, and the infusion apparatus in the present embodiment can be packaged by being matched with a trocar more, as shown in fig. 5, the positive pressure valve 320 comprises an empty rod 321 and a connecting rod 322 which are integrally formed, the empty rod 321 is connected with the positive pressure connector 310, the connecting rod 322 forms a gap connection between the end part and the inner tube 221 and the outer tube 222, the empty rod 321 provides a space for sliding of the sliding body 231, and the length of the empty rod 321 is larger than the length L; referring to fig. 8, which shows the connection principle of the connection rod body 322 and the gap, firstly, the sliding body 231 is slid forward relative to the outer tube 222 by hand to the maximum position of the sliding groove 2221, in order to avoid sliding of the sliding body 231 when the connection rod body 322 is inserted, the sliding body 231 can be abutted against the sliding body 231 by a thumb, then the connection rod body 322 is inserted along the direction close to the sliding body 231 (i.e. the direction indicated by the solid arrow in fig. 8), after the outer edge of the connection rod body 322 contacts with the protecting body 232, the outer edge of the connection rod body 322 presses the protecting body 232, so that the area of the through hole 2321 is enlarged, and meanwhile, the protecting body 232 is folded inwards (i.e. the direction indicated by the broken arrow in fig. 8), so that not only the connection rod body 322 provides an entering channel, but also the protecting body 232 and the inward side of the sliding body 231 are mutually attached after folding, so that the protecting body 232 and the sliding body 231 mutually protect each other can be achieved; the connecting rod 322 can then be adjacent to the void, and when adjacent to the void, the connecting rod 322 can be screwed into the void (because the connecting rod 322 is threaded with the outer tube 222, other connection means, such as plugging, clamping, etc., are not precluded) to complete the communication between the connecting rod 322 and the inner tube 221.

Preferably, as shown in fig. 8, a flaring slot 2312 is provided at the front end of the inner side of the sliding body 231, in order to facilitate the insertion of the connection rod 322, and at the same time, a loose space can be provided for the protecting body 232 when the connection rod 322 is detached, so that the connection rod 322 can be detached conveniently.

Preferably, the friction force between the slider 2311 and the sliding groove 2221 is sufficient to support the sliding body 231 (the friction force between the slider 2311 and the sliding groove 2221 is greater than the self-gravity of the sliding body 231), so that the sliding body 231 can be immobilized without being subjected to external force.

Further, referring to fig. 9, after the connection rod 322 is removed, the sliding body 231 is pushed to the maximum position of the sliding groove 2221, so that by means of the support of the outer tube 222 to the sliding body 231, the loosening of the connection part can be effectively prevented, the through hole 2321 can be prevented from being opened in a large range under the blocking of the inner tube 221, the opening range of the through hole 2321 depends on the interval between the outer edge of the inner tube 221 and the protecting body 232, the opening range of the through hole 2321 is smaller as the interval is smaller, and conversely the opening range of the through hole 2321 is larger as the interval is larger.

Still further, referring to fig. 10 and 11, the inside of the protective body 232 is hollow, forming a chamber; a plurality of elastic bodies 233 are arranged in the cavity around the center of the circle of the protective body 232, each elastic body 233 comprises a triangular head 2331, the tip end of each triangular head 2331 faces towards the through hole 2321, a tail plate 2332 is arranged on one side, far away from the tip end, of each triangular head 2331, side plates 2333 are arranged on two sides of each tail plate 2332, one end of each side plate 2333 is fixedly connected with the corresponding sliding body 231, the other end of each side plate 2333 is connected with each triangular head 2331, and each tail plate 2332 can move relative to the corresponding side plate 2333.

Referring to fig. 12, the specific principle of operation of the elastomer 233 is as follows:

When the space in the outer tube 222 is blocked, the function is mainly shown in part ① in fig. 12, the sliding body 231 is not moved to the maximum position of the sliding groove 2221 at the rear end, the tail plate 2332 coincides with the side plate 2333, the triangular head 2331, the tail plate 2332 and the side plate 2333 are inclined downwards integrally so as to facilitate the insertion of the connecting rod body 322, and the length of the triangular head 2331 in the horizontal direction is a (not the length of the triangular head 2332 per se); when the sliding body 231 moves to the maximum position of the sliding groove 2221 toward the rear end, referring to part ② in fig. 12, the inner tube 221 presses the triangular head 2331 to drive the tail plate 2332 to bend relative to the side plate 2333, the bent triangular head 2331 stays in a horizontal state (shown in fig. 11), the effect of closing the through hole 2321 is better in this state, on one hand, the triangular heads 2331 form a plane approximate to a circular shape, on the other hand, the length of the triangular head 2331 in the horizontal direction is b (the length of the triangular head 2331 itself), and b is greater than a, so that the protective body 232 at the center of the circle is further extruded, and the through hole 2321 is tightly closed.

Since the cam 2331 is bent with respect to the side plate 2333 by the rearward movement of the slider 231 under the blocking of the inner tube 221, the cam 2331 receives a reaction force F in a direction opposite to the friction force F between the slider 2311 and the slide groove 2221, and in order to fix the slider 231 in a fixed state after releasing the hand, it is required that the friction force F between the slider 2311 and the slide groove 2221 is greater than the reaction force F received by the cam 2331

In addition, the inner tube 221 is biased to the triangular head 2331, so that the triangular head 2331 is prevented from moving, and the triangular head 2333 can be folded relative to the side plate 2333, in addition, the elastic strength of the connection between the triangular head 2331 and the side plate 2333 is smaller than that of the connection between the side plate 2333 and the sliding body 231, so that the triangular head 2331 can be folded relative to the side plate 2333 more easily after being blocked, the acting force F is reduced, the requirement on the friction force F is reduced, and the integral strength of the elastic body 233 is ensured, so that the connecting rod body 322 can be fixed by the acting force of the elastic body 233 after being inserted.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. An infusion apparatus capable of preventing connector pollution comprises a rear-end infusion hose (110) with a connector (200) at the front end, wherein liquid medicine is connected through the rear-end infusion hose (110), the connector (200) is matched with a trocar for use, the trocar comprises a positive pressure connector (310), one end of the positive pressure connector (310) is provided with a positive pressure valve (320), and the infusion apparatus is characterized in that the connector (200) comprises a connector main body (210), the rear end of the connector main body (210) is communicated with the rear-end infusion hose (110), and the front end of the connector main body (210) is provided with a connecting end (220);

The connecting end (220) comprises an inner tube (221), and the inner tube (221) is communicated with the rear-end transfusion hose (110);

The connecting end (220) further comprises an outer tube (222), and the outer tube (222) is arranged outside the inner tube (221) and is connected with the connector main body (210) but is not communicated with the connector main body;

The connector (200) further comprises a protective cover (230), wherein the protective cover (230) is arranged outside the outer tube (222) and is used for blocking the space in the outer tube (222) after the positive pressure valve (320) is detached.

2. The infusion set for preventing contamination of a connector according to claim 1, wherein the protective cover (230) covers outside the outer tube (222) to block an inner space thereof;

when the positive pressure valve (320) is connected, the protective cover (230) is separated from the outer tube (222).

3. The infusion set preventing contamination of the connector according to claim 1, wherein the connecting end (220) comprises a sliding body (231), the sliding body (231) being a tubular structure with an inner diameter adapted to an outer diameter of the outer tube (222) for sliding connection with the outer tube (222);

The protective cover (230) further comprises a protective body (232), the protective body (232) is arranged at the front end of the sliding body (231), the protective body (232) is of a round elastic structure, and the outer edge of the protective body (232) is in seamless connection with the outer edge of the sliding body (231);

a through hole (2321) is arranged at the center of the protection body (232), the through hole (2321) can be scaled under the action of the positive pressure valve (320), and the scaling area of the through hole is increased according to the increase of the pressure range of the positive pressure valve (320) and is decreased according to the decrease of the pressure range of the positive pressure valve (320);

The stoma (2321) normally contracts to a closed state.

4. An infusion device for preventing contamination of a connector according to claim 3, wherein a flaring groove (2312) is provided at a front end of an inner side of the sliding body (231).

5. An infusion set preventing contamination of a connector according to claim 3, wherein the friction between the sliding body (231) and the outer tube (222) is greater than the self-gravity of the sliding body (231).

6. An infusion set for preventing contamination of a connector according to claim 3, wherein the slide body (231) is located at a maximum position where a rear end can slide after the positive pressure valve (320) is detached.

7. An infusion set preventing contamination of a connector according to claim 3, wherein the protective body (232) is hollow inside forming a chamber;

a plurality of elastic bodies (233) are arranged in the cavity around the circle center of the protective body (232);

The elastic body (233) comprises a triangular head (2331), the tip end of the triangular head (2331) faces the through hole (2321), and a tail plate (2332) is arranged on one side, far away from the tip end, of the triangular head (2331);

the two sides of the tail plate (2332) are respectively provided with a side plate (2333), one end of the side plate (2333) is fixedly connected with the sliding body (231), the other end of the side plate is connected with the triangular head (2331), and the tail plate (2332) can move relative to the side plate (2333).