CN210228790U

CN210228790U - Medical one-way positive pressure trident

Info

Publication number: CN210228790U
Application number: CN201920582350.1U
Authority: CN
Inventors: Wenyun Li; 李文云
Original assignee: Taizhou Anrong Medical Devices Co ltd
Current assignee: Taizhou Anrong Medical Devices Co ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-04-03
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a medical one-way malleation trident belongs to transfusion system accessory technical field, has solved the comprehensive properties's of its security, reliability, convenience of use and operation problem, and its technical scheme main points are including trident casing and assemble the core group at the inside malleation input that forms of trident casing, the trident casing is including supplying core group installation first end, the second tip opposite with first end of orientation and being located between first end and the second end and forming the third end of slope branch structure up, first end, second end and the inside intercommunication of third end, the inside of the junction of second end and third end is provided with hollow column, has reached the effect that improves comprehensive properties such as use, safety.

Description

Medical one-way positive pressure trident

Technical Field

The utility model relates to a transfusion system accessory technical field especially relates to a medical one-way malleation trident.

Background

In order to realize the operations of liquid confluence, suction and injection drainage and the like in the prior medical technical field, a method shown in figure 1 is adopted, a Y-shaped joint is directly connected with a human body indwelling catheter to form a multi-path communication channel, a needle infusion joint or a needle-free infusion joint is fixedly connected at the branch end of a Y-shaped joint interface, and the infusion joint is used for connecting medical instruments such as an infusion apparatus and the like. In the infusion occasion, when the infusion finishes, the pjncture needle is withdrawn from behind the heparin sodium wash pipe, can produce the negative pressure, leads to disease blood refluence to advance to keep somewhere the pipe end in the blood vessel, need drive the interior retrograde flow blood operation of pipe, and the operation is too loaded down with trivial details, if need not drive blood operation, the Y type connects must refute the expensive needleless connector that can produce the forward liquid flow, causes little economic burden to the disease.

In addition, in the intermittent infusion occasion, the liquid medicine injection channel cannot be turned off, the liquid flow is cut off through the external flow regulating valve, and the external turn-off switch is away from the Y-shaped connector by a certain distance, so that the liquid medicine being infused is diffused into the cut-off tube cavity, the dosage of the patient is insufficient, therefore, in order to realize intermittent medicine supply, a puncture needle of an infusion system needs to be pulled out to cut off the liquid supply, the puncture needle is connected again when needed, the liquid supply is connected again, in the infusion drainage occasion, the defects of the same problems as the intermittent infusion occasion exist, and the operation is also complicated.

The ordinary trifurcate infusion process needs to be inverted so as to exhaust air in the trifurcate infusion device, bacteria and foreign matters are easy to invert if the end face of the trifurcate infusion device is provided with a groove structure, plastic particles are easy to fall off when an injection needle is inserted into the trifurcate infusion device, liquid medicine is prevented from flowing back through a flow regulating valve or a broken catheter in the injection process, and when the injection needle is pulled out, the risk of accidentally injuring operators exists.

Therefore, the structure of the device needs to be improved, and the comprehensive performance of the safety, the reliability and the convenience of the use and the operation of the device needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims at providing a medical one-way malleation trident has the advantage of higher security, reliability and convenience.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a medical one-way malleation trident, includes the trident casing and assembles the core group that forms the malleation input in the trident casing is inside, the trident casing includes the first end that supplies the core group installation, orientation and the second tip opposite with the first end and lie in between first end and the second end and form the third end of slope branch structure up, the inside intercommunication of first end, second end and third end, the inside of the junction of second end and third end is provided with hollow post.

Through above-mentioned setting, second tip and third tip are used for connecting the transfer line, and the infusion direction is by third tip flow direction second tip, at first because the existence of first tip, then can make the air of third tip enter into in the second tip in infusion process, but through setting up empty core column after, the effect that reaches the buffering is gathered at the outer wall of empty core column at first to the liquid of input, then enters into the inside of empty core column again through the mode that liquid is full of overflow gradually, flows out from the second tip again. In this liquid overflow process, bubbles are not easily generated, air is not easily taken into the second end portion, and the air can be discharged upward.

As a specific aspect of the present invention, it may be preferable that: the core group is including fastening at the external shell of first end, set up nook closing member in the external shell, the last elastic sleeve of inner wall and fastening assembly at nook closing member lower extreme and external shell lower elastic sleeve of inner wall on nook closing member upper end and external shell, the nook closing member is provided with vertical passageway, go up the elastic sleeve and open and close respectively with lower elastic sleeve the opening of passageway.

Through the arrangement, the outer shell is convenient for connecting the injector and protecting the needle core, the upper elastic sleeve and the lower elastic sleeve. The nook closing member can carry out activity from top to bottom in the shell through last elastic sleeve and lower elastic sleeve, when the syringe inserts, can be promoted and open the passageway by the syringe tip for the syringe directly communicates to hollow column through the nook closing member, and the nook closing member is with hollow column hole be airtight connection under the nook closing member directly worn to break through by the nook closing member, owing to the separation effect of elastic sleeve down, makes and ends between third tip and the hollow column this moment. The syringe injects the liquid medicine in-process and can inputs the inner wall of external shell through the air vent, because the elastic construction extrusion produces the space change, liquid can be full of the space when the syringe withdraws, through lower elastic sleeve return and extrusion liquid through the air vent backward flow second end, consequently can produce little malleation effect.

As a specific aspect of the present invention, it may be preferable that: the lower end of the needle core is in plug-in fit with the hollow column.

Through the setting, the stylet is inserted into the hollow column, so that the liquid medicine can smoothly enter the third end part through the hollow column, plastic particles caused by puncture cannot be generated due to the movement of the stylet, the potential safety hazard of the plastic particles is also reduced, and the infusion or the medicine injection is safer and more reliable.

As a specific aspect of the present invention, it may be preferable that: and the middle part of the needle core is provided with a vent hole communicated with the inner cavity of the outer shell and the channel.

Through the arrangement, the vent hole is used for air to enter and exit, so that the air in the needle core is communicated with the air outside the needle core to enter and exit. When liquid enters the second end part from the third end part during infusion, air can be discharged to the outside of the needle core from the vent hole, and when medicine is injected, liquid medicine enters the hollow column through the channel of the needle core, when the needle core moves downwards, the upper elastic sleeve and the lower elastic sleeve are deformed, the space in the external shell is enlarged due to the folding deformation of the upper elastic sleeve and the lower elastic sleeve, the air in the needle core enters the external shell through the vent hole, and after the injector moves out, the upper elastic sleeve and the lower elastic sleeve recover the shape through self elasticity, the space in the external shell is reduced, the air in the external shell is discharged inwards through the vent hole, positive pressure is generated on the second end part, liquid flow of the second end part is facilitated to be pushed, and flow guide is avoided.

As a specific aspect of the present invention, it may be preferable that: the upper elastic sleeve and the lower elastic sleeve are both provided with corrugated pipe structures.

Through the arrangement, the corrugated pipe structure is adopted, so that the shape can be changed and reset conveniently. When the upper elastic sleeve or the lower elastic sleeve is compressed, the volume of the needle core or the occupied space of the needle core is reduced, and when the needle core is expanded and reset, the space occupied by the needle core is increased.

As a specific aspect of the present invention, it may be preferable that: the top of the upper elastic sleeve protrudes out of the opening of the external shell.

Through the arrangement, the formation of a groove can be avoided, the alcohol sterilization is more thorough, and the medicine is not easy to remain.

As a specific aspect of the present invention, it may be preferable that: the lower end of the lower elastic sleeve is provided with a convex ring, and the inner wall of the first end is provided with a concave ring for fastening the convex ring.

Through the arrangement, the convex ring plays a role in limiting and fastening the lower elastic sleeve, so that the lower elastic sleeve is higher in tightness.

As a specific aspect of the present invention, it may be preferable that: the lower end of the lower elastic sleeve is provided with a straight-line-shaped notch at the position opposite to the opening of the stylet.

Through the arrangement, the notch is beneficial to reducing the generation of bubbles, and the positive pressure can be conveniently generated.

As a specific aspect of the present invention, it may be preferable that: the height of the hollow column is greater than the height of the inflow port at the second end.

Through the arrangement, the hollow column is arranged, so that the inversion exhaust operation of a common three-fork structure is avoided, and the operation is safer and more reliable.

As a specific aspect of the present invention, it may be preferable that: the needle core is provided with a limiting ring for clamping the upper elastic sleeve and the lower elastic sleeve.

Through the arrangement, the structure of the needle core can ensure that the upper elastic sleeve and the lower elastic sleeve are matched more reliably and are not easy to fall off.

The utility model discloses technical effect mainly embodies in following aspect:

firstly, inverted exhaust is not needed in the operation process, bubbles are not easy to generate and input into a human body, and gas residue is less;

second, the first end part is not easy to have residual liquid medicine, so that the safety and the reliability are higher;

thirdly, the liquid medicine is more convenient to inject at the first end part, the liquid medicine can move towards the human body, the backflow cannot be caused, the special operation is not needed, and the air residual quantity is less to remain on the inner wall of the needle core;

fourthly, positive pressure effect can be generated after the injector is pulled out, liquid is pushed forwards, and then the residual of the injection liquid medicine and the infusion liquid medicine are separated from each other by the elastic sleeve sealing bar;

fifthly, due to the structure of the corrugated pipe, the operation process is labor-saving, and the whole structure is convenient and safe to use.

Drawings

FIG. 1 is a schematic structural diagram of a Y-junction in the prior art;

FIG. 2 is a schematic structural diagram of an embodiment;

FIG. 3 is a sectional view in a first direction in the embodiment;

fig. 4 is a sectional view in a second direction in the embodiment.

Reference numerals: 1. a trifurcated housing; 11. a first end portion; 12. a second end portion; 13. a third end portion; 14. a hollow column; 15. a concave ring; 2. a core group; 21. an external connection shell; 22. a needle core; 220. a channel; 221. a vent hole; 222. a limiting ring; 23. an elastic sleeve is arranged; 24. a lower elastic sleeve; 241. a convex ring; 242. and (6) cutting.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.

Example (b):

a medical unidirectional positive pressure trifurcate is shown in figures 1 and 2 and comprises a trifurcate shell 1 and a core group 2 which is assembled inside the trifurcate shell 1 to form positive pressure input. The trifurcated casing 1 comprises a first end portion 11 for installing the core pack 2, a second end portion 12 facing opposite to the first end portion 11, and a third end portion 13 located between the first end portion 11 and the second end portion 12 and forming a branch structure inclined upward. The placement in use is subject to fig. 1. The second end 12 and the third end 13 are connected to the infusion tube. The infusion direction is from the third end 13 to the second end 12. The first end portion 11, the second end portion 12 and the third end portion 13 are communicated with each other, and a hollow column 14 is arranged inside a joint of the second end portion 12 and the third end portion 13. The height of the hollow column 14 is greater than the height of the inflow opening of the second end 12, i.e. in fig. 1: the height of H1 is greater than that of H2, the structure is preferable, the hollow column 14 is arranged, the inverted air exhaust operation of the general three-fork structure is avoided, and the structure is safer and more reliable.

The core group 2 comprises an external shell 21 fastened at the first end part 11, a needle core 22 arranged in the external shell 21, an upper elastic sleeve 23 fastened and assembled at the upper end of the needle core 22 and the upper inner wall of the external shell 21, and a lower elastic sleeve 24 fastened and assembled at the lower end of the needle core 22 and the lower inner wall of the external shell 21, wherein the needle core 22 is provided with a vertical channel 220, and the upper elastic sleeve 23 and the lower elastic sleeve 24 respectively open and close the opening of the channel 220. The upper elastic sleeve 23 and the lower elastic sleeve 24 are made of medical silica gel. The upper end of the external connection shell 21 is provided with an external thread structure, so that the connection of the syringe is convenient, and the connection of the syringe is more reliable.

The lower end of the stylet 22 is tapered so that the lower end of the stylet 22 is in mating engagement with the hollow post 14. The stylet 22 is inserted into the hollow column 14, so that the liquid medicine can smoothly enter the third end part 13 through the hollow column 14, plastic particles caused by puncture cannot be generated due to the movement of the stylet 22, the potential safety hazard of the plastic particles is reduced, and the infusion or the medicine injection is safer and more reliable. The stylet 22 is provided with a limiting ring 222 for clamping the upper elastic sleeve 23 and the lower elastic sleeve 24. The structure of the stylet 22 can ensure that the upper elastic sleeve 23 and the lower elastic sleeve 24 are matched more reliably and are not easy to fall off.

The outer housing 21 facilitates syringe attachment and protection of the hub 22, the upper elastomeric sleeve 23 and the lower elastomeric sleeve 24. The needle core 22 can move up and down in the outer casing 21 through the upper elastic sleeve 23 and the lower elastic sleeve 24, and when the injector is connected, the needle core can be pushed by the end of the injector to open the channel 220, so that the injector is directly communicated to the hollow column 14 through the needle core 22, and at the moment, the blocking effect of the lower elastic sleeve 24 causes the stop between the third end 13 and the hollow column 14. When the syringe is withdrawn, a slight positive pressure effect is created.

As shown in fig. 2 and 3, the middle of the needle core 22 is provided with a vent hole 221 communicating the inner cavity of the external housing 21 and the passage 220. The vent 221 functions to allow air to enter and exit, so that air inside the needle core 22 communicates with air outside the needle core 22. When liquid enters the second end 12 from the third end 13 during transfusion, air can be discharged from the vent hole 221 to the outside of the needle core 22, and when medicine is injected, medicine liquid enters the hollow column 14 through the channel 220 of the needle core 22, when the needle core 22 moves downwards, the upper elastic sleeve 23 and the lower elastic sleeve 24 are deformed, the space in the outer shell 21 is enlarged due to the folding deformation of the upper elastic sleeve 23 and the lower elastic sleeve 24, the air in the needle core 22 enters the outer shell 21 through the vent hole 221, and after the syringe is moved out, the upper elastic sleeve 23 and the lower elastic sleeve 24 restore to shapes through self elasticity, the space in the outer shell 21 is reduced, so that the air in the outer shell 21 is discharged inwards through the vent hole 221, and thus positive pressure is generated on the second end 12, which is helpful for pushing the liquid flow of the second end 12, and flow guide cannot be generated.

The upper elastic sleeve 23 and the lower elastic sleeve 24 each have a bellows structure. The corrugated pipe structure is adopted to facilitate the change and the reset of the shape. When the upper elastic sleeve 23 or the lower elastic sleeve 24 is compressed, the volume of the needle core 22 or the occupied space of the needle core 22 is reduced, and when the needle core 22 is expanded and reset, the occupied space of the needle core 22 is increased. The top of the upper elastic sleeve 23 protrudes out of the opening of the external shell 21. Therefore, the formation of grooves can be avoided, the alcohol sterilization is more thorough, and the medicine is not easy to remain.

The lower end of the lower elastic sleeve 24 is provided with a convex ring 241, and the inner wall of the first end portion 11 is provided with a concave ring 15 for fastening the convex ring 241. The convex ring 241 has the functions of limiting and fastening the lower elastic sleeve 24, so that the lower elastic sleeve 24 has higher tightness. The lower end of the lower elastic sleeve 24 is provided with a straight-line-shaped notch 242 at the position opposite to the opening of the needle core 22. The use of such a slit 242 is advantageous in reducing the generation of bubbles and can facilitate the generation of positive pressure.

The second end part 12 and the third end part 13 are used for connecting an infusion tube, the infusion direction is from the third end part 13 to the second end part 12, firstly, due to the existence of the first end part 11, air at the third end part 13 can enter the second end part 12 in the infusion process, but after the hollow column 14 is arranged, the input liquid is firstly accumulated on the outer wall of the hollow column 14 to achieve the buffering effect, then enters the inside of the hollow column 14 again in a mode of gradually overflowing the liquid, and then flows out from the second end part 12. During this liquid overflow, air bubbles are less likely to be generated, air is less likely to be entrained into the second end portion 12, and air can be allowed to drain upwards.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a medical one-way malleation trident, characterized by includes the trident casing and assembles the core group that forms the malleation input at the trident casing is inside, the trident casing includes the first end that supplies the core group installation, the orientation and the second tip opposite with the first end and lie in between first end and the second end and form the third tip of the branch structure that inclines upwards, the inside intercommunication of first end, second end and third end, the inside of the junction of second end and third end is provided with hollow post.

2. The medical unidirectional positive pressure trident of claim 1, wherein said core group comprises an external casing fastened at the first end, a needle core arranged in the external casing, an upper elastic sleeve fastened and assembled at the upper end of the needle core and the upper inner wall of the external casing, and a lower elastic sleeve fastened and assembled at the lower end of the needle core and the lower inner wall of the external casing, said needle core is provided with a vertical channel, and said upper elastic sleeve and lower elastic sleeve open and close the opening of said channel respectively.

3. The medical unidirectional positive pressure trident of claim 2, wherein the lower end of said stylet is in plug-in engagement with the hollow post.

4. The medical unidirectional positive pressure trident as claimed in claim 2, wherein the middle part of the needle core is provided with a vent hole for communicating the inner cavity of the outer casing and the passage.

5. The medical positive one-way pressure trident of claim 2, wherein said upper and lower elastic sleeves each have a bellows structure.

6. The medical positive unidirectional pressure trifurcation of claim 2, wherein the top of the upper elastic sleeve protrudes out of the opening of the external shell.

7. The medical unidirectional positive pressure trident of claim 2, wherein the lower end of said lower elastic sleeve is provided with a convex ring, and the inner wall of said first end portion is provided with a concave ring for fastening said convex ring.

8. The medical unidirectional positive pressure trident of claim 2, wherein the lower end of the lower elastic sleeve is provided with a straight-line-shaped notch at the position opposite to the opening of the stylet.

9. The medical positive one-way pressure trifurcate of claim 1 wherein the height of said hollow column is greater than the height of the inflow port at the second end.

10. The medical unidirectional positive pressure trident of claim 2, wherein the stylet is provided with a limiting ring for clamping the upper elastic sleeve and the lower elastic sleeve.