CN213312420U - Transfusion system - Google Patents

Abstract

The utility model discloses an infusion apparatus, which comprises a liquid inlet pipe, a liquid outlet pipe and a flow blocking chamber which are communicated, wherein the tail end of the liquid inlet pipe is connected with the flow blocking chamber; a blocking piece is arranged in the flow blocking chamber, a first cavity is arranged in the flow blocking chamber, the outer edge of the blocking piece is abutted against the inner wall of the flow blocking chamber, a sliding rod is arranged on the bottom surface of the blocking piece, and a second cavity is arranged in the sliding rod; the plugging surface of the plugging piece is provided with a plurality of first guide holes communicated with the first cavity, the sliding rod is provided with a plurality of second guide holes communicated with the second cavity, and the first cavity is communicated with the second cavity. The utility model discloses a set up shutoff piece and guide hole, realized the automatic function of preventing against the current, the utility model has the advantages of simple structure, need not extra manual operation, manufacturing cost is lower, very utilizes industrial production.

Description

Transfusion system

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to transfusion system.

Background

With the continuous development of medical technology, treatment means for patients are also abundant, and an infusion set is one of the most common medical devices applied in the treatment process. The existing infusion apparatus inputs liquid into a human body by utilizing the principle of atmospheric pressure and hydrostatic pressure, but liquid medicine or blood can generate backflow when the conditions such as medicine injection by a rapid pump, blood pressure measurement after infusion or blood pressure measurement on the same side and the like are completed, so that the infusion is turbid, great discomfort can be brought to a patient, even the backflow blood can be coagulated, and certain risk can be generated when the backflow blood is re-infused into the patient. In addition, the existing infusion apparatus does not have the function of preventing the liquid from dripping empty, and when the liquid medicine flows out, if the liquid is not replenished in time or the infusion apparatus is detached, air enters a human body along with the liquid medicine, so that great potential safety hazards exist, and even medical accidents can be caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an infusion apparatus specifically realizes through following technical scheme:

an infusion apparatus comprises a liquid inlet pipe, a liquid outlet pipe and a flow blocking chamber, wherein the flow blocking chamber is communicated with the liquid inlet pipe and the liquid outlet pipe, the liquid inlet pipe comprises a head end and a tail end, and the tail end of the liquid inlet pipe is connected with the flow blocking chamber; a blocking piece is arranged in the flow blocking chamber, the blocking piece comprises a bottom surface and a blocking surface, a first cavity is arranged in the blocking piece, the outer edge of the blocking piece is abutted against the inner wall of the flow blocking chamber and isolates the liquid inlet pipe from the liquid outlet pipe, a sliding rod is arranged on the bottom surface of the blocking piece, and a second cavity is arranged in the sliding rod; the plugging surface quilt of plugging piece the head end of feed liquor pipe divide into and is located the intercommunication face in the inside of room and the partition surface in the inside of feed liquor pipe block, be equipped with a plurality of intercommunications on the intercommunication face the first guide hole of first cavity, be equipped with a plurality of intercommunications on the slide bar the second guide hole of second cavity, the direction of second guide hole with the direction of drain pipe is not parallel to each other, first cavity with the second cavity is linked together.

The liquid inlet pipe, the liquid outlet pipe and the flow choking chamber of the utility model are matched with a drip cup, an injection needle, a needle head protective cap, a flow rate regulator, a bottle plug puncture outfit, a liquid medicine filter and the like in the transfusion device in the prior art for use together, when liquid medicine flows into a human body in the forward direction (namely the direction from the head end to the tail end of the liquid inlet pipe), the liquid medicine can enter a first cavity through a first guide hole on a communication surface, then enters a second cavity, and then reaches the liquid outlet pipe from the second guide hole, thereby entering the human body to realize the transfusion effect; when the liquid medicine flows reversely, the liquid medicine flows into the flow resisting chamber from the liquid outlet pipe and directly acts on the bottom surface of the blocking piece (because the directions of the second guide hole and the liquid outlet pipe are not parallel or different, the direction of the second guide hole is different from the flowing direction of the liquid medicine flowing reversely, so that the liquid medicine flowing reversely rarely flows through the path of the second guide hole, the second chamber, the first guide hole and the liquid inlet pipe, even if a few parts of the liquid medicine enters the path, the blocking piece seals the tail end of the liquid inlet pipe, so that the liquid medicine flowing reversely cannot enter the liquid inlet pipe, the blocking piece is pushed to advance, the blocking surface of the blocking piece seals the tail end of the liquid inlet pipe, the liquid medicine flowing reversely is prevented from entering the liquid inlet pipe, and the effect of preventing the reverse flow is achieved.

In some preferred implementation cases, a guide assembly is further disposed inside the flow-blocking chamber, the guide assembly includes a first limiting ring, a second limiting ring and a support rod, an outer edge of the first limiting ring abuts against or is fixedly connected to an inner wall of the flow-blocking chamber, the second limiting ring is located inside the first limiting ring, one end of the support rod is connected to the first limiting ring, the other end of the support rod is connected to the second limiting ring, and the second limiting ring is matched with the sliding rod and enables the sliding rod to slide inside the second limiting ring. On above-mentioned technical scheme's basis, through setting up a direction subassembly, the slide bar passes through the spacing of second spacing ring for the removal of whole shutoff piece is more stable, simultaneously, because first spacing ring only is equipped with the support rod, so can not influence the promotion of liquid medicine when adverse current to the shutoff piece yet.

In some preferred embodiments, the number of support rods is at least 2. The quantity of the support rods is more than 2, so that the second limiting ring can be more favorably fixed, the movement of the plugging piece is more stable, the number of the support rods is 3 or 4, the flow direction of liquid medicine flowing reversely is not influenced too much, the bottom surface of the plugging piece is not pushed, and the number of the support rods is too little, so that the limiting effect of the second limiting ring is weaker.

In some preferred embodiments, the flow-blocking chamber is cylindrical and the closure member is conical. The room that hinders sets up more pleasing to the eye in cylindrical outward appearance, does not have the edges and corners simultaneously also can avoid too much to knock over and decrease or bring unnecessary injury to medical staff, and at this moment, the side of coniform is promptly the utility model provides a shutoff face.

In some preferred implementations, the infusion apparatus further includes a drip cup, and the drip cup is communicated with the head end of the liquid inlet pipe; an air diaphragm which can seal the head end of the liquid inlet pipe is arranged in the drip cup. When the liquid medicine is input, the liquid level in the drip cup can drive the air diaphragm to rise (under the action of buoyancy), and at the moment, the liquid medicine can normally enter the human body from the head end of the liquid inlet pipe; when the liquid medicine is used up, the air diaphragm can be lowered along with the liquid level to seal the head end of the liquid inlet pipe, so that the liquid medicine is prevented from dripping empty and air is prevented from entering a human body.

The utility model has the advantages that: the utility model discloses a set up shutoff piece and guide hole, realized the automatic function of preventing against the current, the utility model has the advantages of simple structure, need not extra manual operation, manufacturing cost is lower, very utilizes industrial production.

Drawings

FIG. 1 is a schematic cross-sectional view of a liquid outlet pipe, a flow-blocking chamber and a liquid inlet pipe;

FIG. 2 is an overall schematic view of a block piece;

FIG. 3 is a side schematic view of a guide assembly;

fig. 4 is an overall schematic view of the drip chamber and the air membrane.

In fig. 1, 2, 3 and 4, the outlet tube 100, the flow-blocking chamber 200, the inlet tube 300, the blocking member 210, the first guide hole 211, the sliding rod 220, the second guide hole 221, the guide assembly 230, the first stop ring 231, the second stop ring 232, the support rod 233, the drip cup 400, the air diaphragm 500 and the liquid level 600 of the liquid medicine are shown.

Detailed Description

The conception and the technical effects of the present invention will be clearly and completely described below with reference to the embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example 1:

an infusion apparatus comprises a liquid inlet pipe 300, a liquid outlet pipe 100, a cylindrical flow resisting chamber 200 (the structure is shown in figures 1-3), and further comprises a drip cup, an injection needle, a needle head protective cap, a flow rate regulator, a bottle stopper puncture outfit and a liquid medicine filter (known by general technicians or general medical staff in the field) which are matched with the infusion apparatus in the prior art.

The flow resistance chamber 200 is communicated with the liquid inlet pipe 300 and the liquid outlet pipe 100, the liquid inlet pipe 300 comprises a head end and a tail end, and the tail end of the liquid inlet pipe 300 is connected with the flow resistance chamber 200; a conical plugging piece 210 is arranged in the flow resistance chamber 200, the plugging piece 210 comprises a bottom surface and a plugging surface (namely the side surface of the cone), a first cavity is arranged in the plugging piece 210, the outer edge of the plugging piece 210 is abutted against the inner wall of the flow resistance chamber 200 and isolates the liquid inlet pipe 300 from the liquid outlet pipe 100, a sliding rod 220 is arranged on the bottom surface of the plugging piece 210, and a second cavity is arranged in the sliding rod 220; the plugging surface of the plugging piece 210 is divided into a communication surface and a partition surface by the head end of the liquid inlet pipe 300 (when the plugging piece 210 props against the liquid inlet pipe 300), the communication surface is provided with a plurality of first guide holes 211 communicated with the first cavity, the sliding rod 220 is provided with a plurality of second guide holes 221 communicated with the second cavity, and the first cavity is communicated with the second cavity.

The interior of the flow-blocking chamber 200 is further provided with a guide assembly 230, the guide assembly 230 comprises a first limiting ring 231, a second limiting ring 232 and 4 support rods 233, the outer edge of the first limiting ring 231 is fixedly connected with the inner wall of the flow-blocking chamber 200, the second limiting ring 232 is positioned in the first limiting ring 231, one end of each support rod 233 is connected with the first limiting ring 231, the other end of each support rod 233 is connected with the second limiting ring 232, and the second limiting ring 232 is matched with the sliding rod 220.

The working process is as follows: when the liquid medicine flows into the human body in the forward direction (i.e. the direction from the head end to the tail end of the liquid inlet pipe 300), the liquid medicine enters the first cavity through the first guide hole 211 of the communication surface, then enters the second cavity, and then reaches the liquid outlet pipe 100 from the second guide hole, so that the liquid medicine enters the human body to realize the infusion effect; and when the liquid medicine takes place to flow against the current, liquid medicine against the current gushes into to choked flow room 200 from drain pipe 100, direct action is in the bottom surface of shutoff piece 210, promote shutoff piece 210 and advance (because the existence of second spacing ring 232, make shutoff piece 210 can more steady propulsion), make the shutoff face of shutoff piece 210 seal the tail end of living inlet tube 300 (this moment, the connecting surface is located choked flow room 200, and the partition surface is located feed liquor pipe 300), prevent that liquid medicine against the current from getting into in feed liquor pipe 300, realize preventing the effect against the current.

Example 2:

an infusion apparatus is the same as the components of embodiment 1 (the structures of a liquid pipe 300, a liquid outlet pipe 100 and a cylindrical flow resisting chamber 200 are also shown in figures 1-3), and the difference is that a drip cup 400 is structurally shown in figure 4, the drip cup 400 is communicated with the liquid inlet pipe 300 and is connected with the head end of the liquid inlet pipe 300; an air diaphragm 500 capable of sealing the head end of the liquid inlet pipe 300 is arranged in the drip cup 400.

Work flow (anti-reflux function same as example 1): when the liquid medicine is input, the liquid medicine in the drip cup 400 drives the air diaphragm 500 to rise (under the action of buoyancy), so that the air diaphragm 500 floats on the liquid medicine level 600, and at the moment, the liquid medicine can normally enter the human body from the head end of the liquid inlet pipe 300; when the liquid medicine is used up, the air diaphragm 500 is lowered along with the liquid medicine level 600 to seal the head end of the liquid inlet pipe 300, so that dripping is prevented, and air is prevented from entering a human body.

Claims (8)

1. An infusion apparatus is characterized by comprising a liquid inlet pipe, a liquid outlet pipe and a flow blocking chamber, wherein the flow blocking chamber is communicated with the liquid inlet pipe and the liquid outlet pipe; a blocking piece is arranged in the flow blocking chamber, the blocking piece comprises a bottom surface and a blocking surface, a first cavity is arranged in the blocking piece, the outer edge of the blocking piece is abutted against the inner wall of the flow blocking chamber and isolates the liquid inlet pipe from the liquid outlet pipe, a sliding rod is arranged on the bottom surface of the blocking piece, and a second cavity is arranged in the sliding rod; the plugging surface quilt of plugging piece the head end of feed liquor pipe divide into and is located the intercommunication face in the inside of room and the partition surface in the inside of feed liquor pipe block, be equipped with a plurality of intercommunications on the intercommunication face the first guide hole of first cavity, be equipped with a plurality of intercommunications on the slide bar the second guide hole of second cavity, the direction of second guide hole with the direction of drain pipe is not parallel to each other, first cavity with the second cavity is linked together.

2. The infusion apparatus according to claim 1, wherein a guide assembly is further arranged inside the flow blocking chamber, the guide assembly comprises a first limiting ring, a second limiting ring and a support rod, the outer edge of the first limiting ring is abutted against or fixedly connected with the inner wall of the flow blocking chamber, the second limiting ring is located in the first limiting ring, one end of the support rod is connected with the first limiting ring, the other end of the support rod is connected with the second limiting ring, and the second limiting ring is matched with the sliding rod and enables the sliding rod to slide in the second limiting ring.

3. The infusion set according to claim 2, wherein the number of the support bars is at least 2.

4. The infusion set according to claim 1, wherein said flow-blocking chamber is cylindrical and said blocking member is conical.

5. The infusion apparatus according to any one of claims 1 to 4, further comprising a drip cup, wherein the drip cup is communicated with the head end of the liquid inlet tube.

6. The infusion apparatus according to claim 5, wherein an air septum capable of closing the head end of the liquid inlet pipe is arranged in the drip cup.

7. The infusion set according to claim 6, further comprising an injection needle, a needle shield, a flow rate regulator and a stopper piercer.

8. The infusion set according to claim 7, further comprising a medical fluid filter.

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