CN210963321U

CN210963321U - Blood transfusion tube

Info

Publication number: CN210963321U
Application number: CN201920828595.8U
Authority: CN
Inventors: 吴成斌; 王有梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-07-10
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a blood transfusion tube, relating to the field of medical appliances. The blood transfusion tube comprises: the switching valve of body and locating the body, including treat the blood drive's of carrying case, set up the first valve body in feed liquor hole and set up the second valve body in liquid hole, be equipped with the drain hole of intercommunication each other between the valve pocket of first valve body and the valve pocket of second valve body, wherein, the case is including being used for controlling the boss that the drain hole opened or closed to and be used for controlling the elastic component that the boss resets. When the transfusion tube is used for transfusion of a patient, blood conveyed into the first valve body flows through the second valve body after the blood driving valve core is opened to realize transfusion; after the blood transfusion is finished, the valve core is closed, and the phenomenon of temporary backflow of blood is avoided.

Description

Blood transfusion tube

Technical Field

The utility model relates to the field of medical equipment, concretely relates to blood transfusion tube.

Background

A blood transfusion apparatus is a medical instrument for transfusing blood to a patient; after the blood transfusion is finished, the existing blood transfusion tube can not be automatically closed, and emergency patients (such as unconscious patients) in critical life can not remind medical personnel out of the body to close the blood transfusion tube after the blood transfusion is finished; thereby causing a blood backflow, resulting in a medical accident.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blood transfusion tube aims at solving the unable self-closing's of blood transfusion tube problem that has now after the blood transfusion finishes.

The utility model provides a blood transfusion tube, include: the switching valve of body and locating the body, including treat the blood drive's of carrying case, set up the first valve body in feed liquor hole and set up the second valve body in liquid hole, be equipped with the drain hole of intercommunication each other between the valve pocket of first valve body and the valve pocket of second valve body, wherein, the case is including being used for controlling the boss that the drain hole opened or closed to and be used for controlling the elastic component that the boss resets.

Further, the valve core further comprises:

the edge of the partition board is abutted against the inner side wall of the first valve body, the partition board is provided with a plurality of liquid outlet holes, and the elastic piece is used for driving the partition board to reset; and

the second connecting rod is located in the liquid guide hole, the cross section of the second connecting rod is smaller than that of the liquid guide hole, the boss is located in the second valve body, the cross section of the boss is larger than that of the liquid guide hole, and the second connecting rod is connected with the boss.

Furthermore, one end of the elastic part is abutted against the partition plate, and the other end of the elastic part is connected with the inner wall, close to the liquid guide hole, of the first valve body.

Furthermore, the valve core further comprises a first connecting rod, one end of the first connecting rod is connected with the partition plate, and the other end of the first connecting rod is connected with the second connecting rod.

Furthermore, the section of the liquid guide hole is rectangular, and the section of the first connecting rod is rectangular.

Furthermore, the cross section of drain hole is isosceles trapezoid, the cross section of second connecting rod is isosceles trapezoid, the surface of second connecting rod with the internal surface contact cooperation of drain hole.

Furthermore, the first connecting rod is connected to the middle of the partition plate, and the top end of the connecting rod protrudes out of the partition plate along the axis of the liquid inlet hole.

Further, the end part of the first connecting rod connected with the partition plate is arranged in a sphere or a cone shape.

Further, the caliber of the second valve body is smaller than that of the first valve body.

Further, first valve body with second valve body coupling, the feed liquor hole is located first valve body is kept away from the terminal surface of second valve body, go out the liquid hole and be located second valve body is kept away from the terminal surface of first valve body, feed liquor hole, drain hole and play liquid hole coaxial setting.

The infusion tube disclosed by the invention has the beneficial effects that: the valve body of the infusion tube comprises a first valve body, a second valve body and a valve core driven by blood to be delivered. When the transfusion tube is used for transfusion of a patient, blood conveyed into the first valve body flows through the second valve body after the blood driving valve core is opened to realize transfusion; after the blood transfusion is finished, the valve core is closed, and the phenomenon of temporary backflow of blood is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a blood vessel according to some embodiments of the present invention.

Fig. 2 is a schematic sectional view of a transfusion vessel in a transfusion state according to some embodiments of the present invention.

Fig. 3 is a schematic cross-sectional view of a blood vessel according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 and 2, some embodiments of the present disclosure provide a blood transfusion tube 10, the blood transfusion tube 10 includes a tube 11 and an on-off valve 13 disposed on the tube 11. It is understood that the switching valve 13 is provided to the pipe body 11 and controls the passage or opening of the pipe body 11. The blood transfusion tube 10 of the present disclosure may be adapted for various transfusion indications, which will not be described herein.

The pipe 11 includes a first pipe 111 and a second pipe 113. The first pipe 111 is communicated with the liquid inlet 1311 of the switch valve 13, and the liquid outlet 1331 of the switch valve 13 is communicated with the second pipe 113, so that the opening or closing of the pipe 11 is controlled by the switch valve 13.

The tube 11 may be made of polymer material or metal material, etc., as long as it can realize blood transfusion and meet clinical requirements, and is not limited herein. In addition, the cross-section of the tubular body 11 may be configured in any shape that allows fluid transfer, such as circular, square, diamond, etc.

The on-off valve 13 includes a first valve body 131 and a second valve body 133. In some embodiments of the present disclosure, the first valve body 131 and the second valve body 133 each have a tubular structure. Wherein, the caliber of the second valve body 133 is smaller than the caliber of the first valve body 131.

One end of the first valve body 131 is provided with a liquid inlet hole 1311, and the other end of the first valve body 131 is provided with a liquid guide hole 1313. it is understood that the liquid inlet hole 1311 and the liquid guide hole 1313 are respectively communicated with the first valve chamber 1312 of the first valve body 131. Wherein, the liquid inlet 1311 is communicated with the first pipe 111.

In some embodiments, the fluid inlet 1311 is coaxial with the fluid guide 1313. In this way, the blood can smoothly flow in the first valve body 131.

The second valve body 133 has a liquid outlet opening 1331 and a second valve chamber 1332. It will be appreciated that exit port 1331 is in communication with second valve chamber 1332. Wherein, the second valve body 133 is arranged on the first valve body 131, and the liquid guide hole 1313 is communicated with the second valve cavity 1332, thereby realizing the communication between the first valve body 131 and the second valve body 132; the liquid outlet 1331 is communicated with the second tube 113. That is, the blood delivered from the first tube 111 enters the first valve 131 through the liquid inlet 1311, then flows into the second valve 133 through the liquid guide 1313, and finally enters the second tube 113 through the liquid outlet 1331, so as to be delivered into the human body through the second tube 113.

In some preferred embodiments, the liquid guiding holes 1313 and the liquid outlet holes 1331 are coaxial, that is, the axes of the liquid inlet holes 1311 and the liquid outlet holes 1331 are collinear. In this way, the blood can smoothly flow in the second valve body 133.

Referring to fig. 1 and 2, in some embodiments of the present disclosure, the liquid guiding hole 1313 has a rectangular cross section, and correspondingly, the valve core 125 is disposed as follows:

the spool 135 is provided in the first and second valve bodies 131 and 133. Specifically, the valve spool 135 includes a diaphragm 1351, a resilient member 1352, a first connecting rod 1353, a second connecting rod 1354, and a boss 1355.

The partition 1351 is provided with a plurality of through holes (not shown) along the axial direction of the drainage hole 1313 for the passage of blood. The partition plate 1351 is slidably disposed in the first valve chamber 1312 in the direction of the axis of the fluid guide hole 1313, and the peripheral edge of the partition plate 1351 abuts against the inner side wall of the first valve body 131.

The term "abutment" means that the peripheral edge of the diaphragm 1351 is in contact with the inner wall of the first valve body 131 to ensure that blood cannot pass through, while ensuring that the diaphragm 1351 can slide along the inner wall of the first valve chamber 1312. The partition plate 1351 may be provided at a periphery thereof with a rubber gasket, so that blood cannot pass between the partition plate 1351 and the inner wall of the first valve body 131.

One end of the elastic member 132 abuts against the diaphragm 1351, and the other end is connected to the inner wall of the first valve body 110, which is provided with the fluid guide hole 1313. The elastic member 132 may be a compression spring, a steel sheet and a corrugated tube with holes, and the like, which are arranged at intervals on the axis of the fluid guide hole 1313, and the elastic member 132 is not exhaustive, as long as blood can still pass through the elastic member 132 in a compressed state.

Both ends of the first connecting rod 1353 are connected with the partition plate 1351 and the second connecting rod 1354, respectively; both ends of the second connecting rod 1354 are connected to the first connecting rod 1353 and the boss 1355, respectively. That is, one end of the first connecting rod 1353 is connected to the diaphragm 1351, an end of the first connecting rod 1353 remote from the diaphragm 1351 is connected to one end of the second connecting rod 1354, and an end of the second connecting rod 1353 remote from the first connecting rod 1353 is connected to the boss 1355.

In a preferable aspect of some embodiments, the first connecting rods 1353 are connected to the middle of the partition plate 1351, and the first connecting rods 1353 protrude from the partition plate 1351 in an axial direction of the liquid inlet hole 1311. It is further preferable that the end of the first connecting rod 1353 connected to the baffle 1351 is provided in the form of a ball or a cone, and by such an arrangement, when blood is transferred from the first pipe body 111 to the end of the first connecting rod 1353, the first connecting rod 1352 provided in the form of a ball or a cone helps to divide the blood flow through the baffle 1351.

In some embodiments, the diameter of the first connecting rod 1353 is smaller than the diameter of the second connecting rod 1354. When the elastic member 1352 is in the initial state, the connection point of the first connecting rod 1352 and the second connecting rod 1354 is located in the first valve chamber 1312 or the fluid guide hole 1313, so that the blood transferred into the first valve body 131 through the first tube 111 can be conveniently introduced into the fluid guide hole 1313.

The cross-sectional area of the boss 1355 is larger than that of the liquid guide hole 1313, and the cross-sectional area of the liquid guide hole 1313 is larger than that of the second connecting rod 1354. It should be noted that the cross-sectional area can be defined according to the arrangement shapes of the boss 1355, the fluid guide holes 1313 and the second connecting rods 1354, for example, when the boss 1355 is cylindrical, the fluid guide holes 1313 are circular holes and the second connecting rods 1354 are cylindrical, the cross-sectional areas of the three components can be understood as diameters.

When the elastic member 1352 is in the initial state, the boss 1355 is engaged with the outer wall surface of the first valve body 131 in the second valve chamber 1332, thereby closing the pipe body 110. During transfusion, blood is conveyed into the first valve body 131 through the first tube 111, the blood pushes the diaphragm 1351 to move towards the second valve body 133 and compress the elastic member 1352, the diaphragm 1351 drives the first connecting rod 1353 and the second connecting rod 1354 to move towards the second valve body 133, so that a gap is formed between the boss 1355 and the outer wall surface of the first valve body 131 in the second valve cavity 1332, the tube 110 is opened, and meanwhile, the blood flowing through the diaphragm 1351 enters the second valve body 133 through the pressure guide hole 1313 and the gap. When the blood transfusion is stopped, the elastic member 1352 is reset to the initial state, the boss 1355 is attached to the outer wall surface of the first valve body 131 in the second valve chamber 1332 again, that is, the boss 1355 closes the liquid guide hole 1313, and at this time, the first valve body 110 and the second valve body 120 are not communicated, so that the tube body 110 is closed again.

Referring to fig. 3, in other embodiments of the present disclosure, the cross section of the fluid guiding hole 1313 is an isosceles trapezoid, the bottom side of the fluid guiding hole 1313 close to the first valve chamber 1313 is the upper bottom of the isosceles trapezoid, and the bottom side of the fluid guiding hole 1332 close to the second valve chamber 1332 is the lower bottom of the isosceles trapezoid. Correspondingly, the spool 125 is arranged as follows:

the connection relationship of the first connecting rod 1353, the second connecting rod 1354 and the boss 1355 is not described in detail herein. The cross section of the second connecting rod 1354 is isosceles trapezoid, and the cross section of the boss 1355 is cylindrical. The end of the second connecting rod 1354 connected to the first connecting rod 1353 is the upper base of the isosceles trapezoid cross section, and the end of the second connecting rod 1354 connected to the boss 1355 is the lower base of the isosceles trapezoid cross section. The boss 1355 has a cylindrical cross-sectional diameter larger than the length of the lower bottom edge of the isosceles trapezoidal cross-section of the fluid guide hole 1313, so that the boss 1355 can be attached to the outer wall surface of the first valve body 131 within the second valve chamber 1332. It can be seen that when the elastic member 1352 is in the initial state, on one hand, the boss 1355 seals the fluid guiding hole 1313, and on the other hand, the second connecting rod 1354 is attached to the inner wall of the fluid guiding hole 1313, so as to achieve a better sealing effect. During transfusion, blood is conveyed into the first valve body 131 through the first tube 111, the blood pushes the diaphragm 1351 to move towards the second valve body 133 and compress the elastic member 1352, the diaphragm 1351 drives the first connecting rod 1353 and the second connecting rod 1354 to move towards the second valve body 133, so that a gap is formed between the boss 1355 and the outer wall surface of the first valve body 131 in the second valve cavity 1332, and a gap is also formed between the second connecting rod 1354 and the liquid guide hole 1313, so that the tube 110 is opened, and meanwhile, the blood flowing through the diaphragm 1351 enters the second valve body 133 through the pressure guide hole 1313 and the gap.

In summary, some embodiments of the present disclosure provide an infusion tube 10, the valve body 13 of which includes a first valve body 131, a second valve body 133, and a valve element 135 driven by blood to be delivered. When a patient is transfused with the infusion tube 10, the blood driven valve element 135 that is fed into the first valve element 131 is opened and then flows through the second valve element 133 to achieve transfusion; after the blood transfusion is finished, the valve core 135 is closed, so that the phenomenon of blood backflow is avoided.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. A blood delivery vessel, comprising:

a pipe body; and

the switch valve arranged on the tube body comprises a valve core driven by blood to be conveyed, a first valve body provided with a liquid inlet hole and a second valve body provided with a liquid outlet hole, wherein liquid guide holes communicated with each other are formed between the valve cavity of the first valve body and the valve cavity of the second valve body, and the valve core comprises a boss for controlling the liquid guide holes to be opened or closed and an elastic piece for controlling the boss to reset.

2. The blood delivery tube of claim 1, wherein the valve core further comprises:

the periphery of the partition plate is abutted against the inner side wall of the first valve body, the partition plate is provided with a plurality of liquid outlet holes, and the elastic piece is used for driving the partition plate to reset; and

3. The blood delivery tube of claim 2, wherein one end of the elastic member abuts against the partition plate, and the other end of the elastic member is connected to the inner wall of the first valve body near the drainage hole.

4. The blood delivery tube of claim 3, wherein the valve core further comprises a first connecting rod, one end of the first connecting rod is connected to the partition, and the other end of the first connecting rod is connected to the second connecting rod.

5. The delivery tube of claim 4, wherein the drainage holes are rectangular in cross-section and the first connecting rods are rectangular in cross-section.

6. The blood transfusion tube of claim 2, wherein the cross section of the drainage hole is isosceles trapezoid, the cross section of the second connecting rod is isosceles trapezoid, and the outer surface of the second connecting rod is in contact fit with the inner surface of the drainage hole.

7. The blood transfusion tube as claimed in claim 4, wherein the first connecting rod is connected to a middle portion of the partition, and a top end of the connecting rod protrudes from the partition along an axis of the fluid inlet hole.

8. The blood delivery tube of claim 7, wherein the end of the first connecting rod connected to the septum is provided in the form of a sphere or cone.

9. The blood delivery tube of claim 1, wherein the second valve body has a smaller bore than the first valve body.

10. The blood delivery tube of claim 1, wherein the first valve body is connected to the second valve body, the fluid inlet hole is located on an end surface of the first valve body away from the second valve body, the fluid outlet hole is located on an end surface of the second valve body away from the first valve body, and the fluid inlet hole, the fluid guide hole and the fluid outlet hole are coaxially arranged.