CN205649737U

CN205649737U - Medical check valve

Info

Publication number: CN205649737U
Application number: CN201620287722.4U
Authority: CN
Inventors: 黄敬远
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-08
Filing date: 2016-04-08
Publication date: 2016-10-19
Anticipated expiration: 2026-04-08

Abstract

The utility model belongs to the technical field of medical instrument, concretely relates to medical check valve can connect in syringe, transfusion system and other medical appliances, and the control liquid that can be fine or the gaseous flow direction for patient's infusion, extraction hydrops, blood transfusion, are perhaps gone on to the liquid medicine that branch liquid is handled and can be realized aseptic, quick completion carminative the time, reduce or avoid the weeping, reduce the number of times that pulls out needle, contact pin, the great misery that has reduced patient.

Description

A kind of Medical check valve

Technical field

This utility model belongs to technical field of medical instruments, is specifically related to a kind of Medical check valve.

Background technology

In terms of medical apparatus and instruments, check valve is widely used in above the medical apparatus and instruments such as tracheal intubation, catheter, laryngeal mask, anaesthetic mask, and the check valve used the most on the market is mostly and is made up of valve body, valve gap, valve core cap, metal spring, fluid sealant pad.It is to be produced pressure compression glue gasket by spring to seal owing to it produces the principle sealed, the pressure of spring is inadequate, can seal bad, pressure is the biggest, again can be in use, the syringe of ventilation is backed down, affect the operation of nurse, and owing to check valve volume is tiny, structure is complicated, so the required precision to part is high, manufacturing cost remains high, it addition, during patient is treated, sometimes auxiliary patient's normal ventilation while, patient also will with trachea, intubate and do nuclear magnetic resonance, NMR.

Utility model content

The purpose of this utility model is to solve the deficiency of Medical check valve in prior art.

To this end, this utility model provides a kind of Medical check valve, including valve body and passage, and it is arranged at the spool of channel interior, described valve body is divided into upper valve body and lower valve body, and described spool includes that upper valve core and bottom spool, described upper valve core are the annulus being arranged at channel interior；The medial wall of described bottom spool is provided with convex through hole, and the bottom surface of bottom spool is provided with barrier plate, and described barrier plate is connected by linking arm and bottom spool sidewall are fixing；Being additionally provided with support member inside described upper valve body, this support member coordinates with the stop member being arranged at lower valve body lateral wall, in order to upper valve core coincide with bottom spool, it is ensured that passage is individual event passage.

It is provided with the upper interface channel connected with upper valve core in the middle part of described upper valve body end face, and the top of upper interface channel is provided with outer connection screw thread.

The bottom surface of described lower valve body and sidewall junction are provided with threaded connecting sleeve, and described threaded connecting sleeve is internal, be provided with the lower interface channel connected with bottom spool in the middle part of the bottom surface of lower valve body.

The lateral wall of described lower valve body is provided with leakage-proof part, and described leakage-proof part coincide with the sidewall of upper valve body.

It is provided with the second time interface channel connected with bottom spool in the middle part of described lower valve body bottom surface, and the bottom of second time interface channel is provided with outer connection screw thread.

The end face of described upper valve body and sidewall junction are provided with the second threaded connecting sleeve, inside described second threaded connecting sleeve, are provided with interface channel on second connected with upper valve core in the middle part of the end face of upper valve body.

Being provided with semicircle spherical flow control parts in described bottom spool, described flow control parts bottom surface is provided with Flexible Connector.

The beneficial effects of the utility model: this Medical check valve that this utility model provides, syringe, transfusion device and other medical instruments can be connected to, can be good at controlling liquid or the flow direction of gas, to patient infusion, extraction hydrops, blood transfusion, or be capable of the when that medicinal liquid being carried out separatory process and aerofluxus aseptic, quickly finish, reduce or avoid leakage, reduce the number of times pulling out pin, contact pin, be greatly reduced the misery of patient.

Below with reference to accompanying drawing, this utility model is described in further details.

Accompanying drawing explanation

Fig. 1 is Medical check valve overall schematic.

Fig. 2 is upper valve body schematic diagram.

Fig. 3 is lower valve body schematic diagram.

Fig. 4 is lower valve body top plan view.

Fig. 5 is upper valve body the second schematic diagram.

Fig. 6 is lower valve body the second schematic diagram.

Fig. 7 is upper valve body the 3rd schematic diagram.

Fig. 8 is lower valve body the 3rd schematic diagram.

Fig. 9 is lower valve body the 4th schematic diagram.

Figure 10 is that Double needle stand syringe share schematic diagram with Medical check valve.

Figure 11 is Medical check valve direct-connected mouth schematic diagram.

Figure 12 is Medical check valve threaded mouth schematic diagram.

Figure 13 be Medical check valve one end be the direct-connected mouth other end be threaded connecting sleeve interface diagram.

Figure 14 be Medical check valve one end be the threaded mouth other end be threaded connecting sleeve interface diagram figure.

Figure 15 be Medical check valve one end be the direct-connected mouth other end be external screw thread connector schematic diagram.

Figure 16 be Medical check valve one end be the threaded mouth other end be external screw thread connector schematic diagram figure.

In figure: 1, upper valve body；2, lower valve body；3, upper valve core；4, bottom spool；5, convex through hole；6, annulus；7, draw-in groove；8, barrier plate；9, linking arm；10, stop member；11, leakage-proof part；12, lower interface channel；13, threaded connecting sleeve；14, upper interface channel；15, support member；16, second time interface channel；17, interface channel on second；18, the second threaded connecting sleeve；19, flow control parts；20, Flexible Connector；21, Double needle stand syringe；22, needle stand；23, syringe；24, Medical check valve.

Detailed description of the invention

Reach, by this utility model is expanded on further, technological means and effect that predetermined purpose is taked, below in conjunction with drawings and Examples to detailed description of the invention of the present utility model, architectural feature and effect thereof, describe in detail as follows.

Embodiment 1:

In order to solve the deficiency of existing Medical check valve, this utility model provides a kind of Medical check valve as shown in Figure 1, Figure 2, Figure 3, Figure 4, including valve body and passage, and it is arranged at the spool of channel interior, described valve body is divided into upper valve body 1 and lower valve body 2, described spool includes upper valve core 3 and bottom spool 4, and described upper valve core 3 is the annulus 6 being arranged at channel interior；The medial wall of described bottom spool 4 is provided with convex through hole 5, and this convex through hole 5 is provided with three, and angle is 120 ° between any two；The bottom surface of bottom spool 4 is provided with barrier plate 8, and described barrier plate 8 is connected by linking arm 9 and bottom spool 4 sidewall are fixing；And linking arm 9 is also equipped with three, angle is 120 ° between any two, as shown in Figure 4, one end of linking arm 9 is fixing with barrier plate 8 to be connected, the other end is connected with the side of bottom spool 4, and shown linking arm 9 is S-shaped, and this S-shaped linking arm 9 is arranged at intervals on bottom spool 4 sidewall with convex through hole 5；Described upper valve body 1 is internal is additionally provided with support member 15, and this support member 15 coordinates with the stop member 10 being arranged at lower valve body 2 lateral wall, in order to upper valve core 3 coincide with bottom spool 4, it is ensured that passage is individual event passage.

As shown in Figure 1, Figure 2, shown in Fig. 7, it is provided with the upper interface channel 14 connected with upper valve core 3 in the middle part of described upper valve body 1 end face, and the top of upper interface channel 14 is provided with outer connection screw thread.

As shown in Fig. 1, Fig. 3, Fig. 8, the bottom surface of described lower valve body 2 and sidewall junction are provided with threaded connecting sleeve 13, are provided with, in the middle part of the bottom surface of described threaded connecting sleeve 13 valve body 2 internal, lower, the lower interface channel 12 connected with bottom spool 4.

When liquid enters this Medical check valve from the upper interface channel 14 shown in Fig. 1 when, barrier plate 8 can be acted on by thrust, thus promote the direction of the downward valve body 2 of bottom spool 4 to move, thus make liquid can pass through convex through hole 5, flow out this Medical check valve hence into lower interface channel 12；When liquid enters this Medical check valve from lower interface channel 12 when, barrier plate 8 can be promoted to move to the direction of upper valve body 1, thus make liquid cannot pass through convex through hole 5, thus cut off the flow direction of liquid.

As it is shown on figure 3, the lateral wall of described lower valve body 2 is provided with leakage-proof part 11, described leakage-proof part 11 coincide with the sidewall of upper valve body 1, so can improve the closure of valve body, it is to avoid cause the phenomenon of leakage to occur because fluid produces pressure by passage.

As shown in Figure 6, it is provided with, in the middle part of described lower valve body 2 bottom surface, the second time interface channel 16 connected with bottom spool 4, and the bottom of second time interface channel 16 is provided with outer connection screw thread；So can facilitate and be attached with other medical apparatus, or outer connection screw thread is removed, change convenient other medical apparatus and instruments with prior art of common connector into and be attached.

As shown in Figure 5, the end face of described upper valve body 1 and sidewall junction are provided with the second threaded connecting sleeve 18, described second threaded connecting sleeve 18 is internal, be provided with interface channel 17 on second connect with upper valve core 3 in the middle part of the end face of upper valve body 1, or the connector that the connector of interface channel on second 17 is arranged to lead to facilitates and other medical apparatus and instruments of prior art are attached.

As shown in Figure 8, Figure 9, being provided with the flow control parts 19 that semicircle is spherical in described bottom spool 4, described flow control parts 19 bottom surface is provided with Flexible Connector 20, and this set equally realizes the function of check valve, and structure is the simplest.

Embodiment 2:

Medical check valve described in above-described embodiment 1, can be arranged on the syringe 21 of double needle seat, between its needle stand 22 and syringe 23 of syringe, as shown in Figure 10, so can control to flow in/out the liquid of Double needle stand syringe 21, guarantee backflow phenomenon, it is possible to achieve feed liquor, go out the recycling of liquid, it is to avoid because frequently contact pin, pull out pin and the problem that causes antibacterial to infect, bring great pain to patient.

Or Medical check valve is arranged on tube for transfusion, so rescue patient when, this tube for transfusion can be connected on syringe, hydrops, i.e. safety can be extracted quickly and easily and facilitate again.

Or by described Medical check valve, be arranged on medical thrust, if be inserted in different storing medicine bottles, it is possible to realize aseptic virus-free, separate medicinal liquid fast and efficiently.

Carrying out the blood transfusion of same blood group when, can be arranged on transfusion needle by this Medical check valve, when equally preventing from transfusing blood, the backflow of volume blood, reduces the possibility infecting virus.

It addition, for the most emerging infusion pump, transfusion when, the efficiency of transfusion can be improved well avoid liquid to reflux if arranging this check valve.

Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16 show several connector schematic diagrams of this Medical check valve.Wherein, Figure 11 is Medical check valve direct-connected mouth schematic diagram, Figure 12 is Medical check valve threaded mouth schematic diagram, Figure 13 be Medical check valve one end be the direct-connected mouth other end be threaded connecting sleeve interface diagram, Figure 14 be Medical check valve one end be the threaded mouth other end be threaded connecting sleeve interface diagram figure, Figure 15 be Medical check valve one end be the direct-connected mouth other end be external screw thread connector schematic diagram, Figure 16 be Medical check valve one end be the threaded mouth other end be external screw thread connector schematic diagram figure.Actual application for check valve is not limited to the interface mode described in embodiment, required structure can be used flexibly to arrange pattern according to the needs of reality application.

The Medical check valve that above example is used, the needs that its liquid arranged flows to according to reality application are set, above-described embodiment does not flow to the switch direction of namely valve and makees concrete restriction liquid, but in Figure of description, direction pointed by arrow is the flow direction of liquid, the most no longer illustrates.

Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims

1. a Medical check valve, including valve body and passage, and it is arranged at the spool of channel interior, described valve body is divided into upper valve body (1) and lower valve body (2), it is characterized in that: described spool includes upper valve core (3) and bottom spool (4), described upper valve core (3) is the annulus (6) being arranged at channel interior；The medial wall of described bottom spool (4) is provided with convex through hole (5), and the bottom surface of bottom spool (4) is provided with barrier plate (8), and described barrier plate (8) is connected by linking arm (9) and bottom spool (4) sidewall are fixing；Described upper valve body (1) is internal is additionally provided with support member (15), and this support member (15) coordinates with the stop member (10) being arranged at lower valve body (2) lateral wall, in order to upper valve core (3) coincide with bottom spool (4), it is ensured that passage is individual event passage.

2. Medical check valve as claimed in claim 1, it is characterised in that: it is provided with the upper interface channel (14) connected with upper valve core (3) in the middle part of described upper valve body (1) end face, and the top of upper interface channel (14) is provided with outer connection screw thread.

3. Medical check valve as claimed in claim 1, it is characterized in that: the bottom surface of described lower valve body (2) and sidewall junction are provided with threaded connecting sleeve (13), are provided with the lower interface channel (12) connected with bottom spool (4) in the middle part of the bottom surface of described threaded connecting sleeve (13) valve body internal, lower (2).

4. Medical check valve as claimed in claim 1, it is characterised in that: the lateral wall of described lower valve body (2) is provided with leakage-proof part (11), and described leakage-proof part (11) coincide with the sidewall of upper valve body (1).

5. Medical check valve as claimed in claim 1, it is characterised in that: it is provided with the second time interface channel (16) connected with bottom spool (4) in the middle part of described lower valve body (2) bottom surface, and the bottom of second time interface channel (16) is provided with outer connection screw thread.

6. Medical check valve as claimed in claim 1, it is characterized in that: the end face of described upper valve body (1) and sidewall junction are provided with the second threaded connecting sleeve (18), described second threaded connecting sleeve (18) is internal, be provided with interface channel (17) on second connected with upper valve core (3) in the middle part of the end face of upper valve body (1).

7. Medical check valve as claimed in claim 1, it is characterised in that: being provided with semicircle spherical flow control parts (19) in described bottom spool (4), described flow control parts (19) bottom surface is provided with Flexible Connector (20).