CN218980018U

CN218980018U - Anti-reflux device for venous indwelling needle

Info

Publication number: CN218980018U
Application number: CN202223048868.8U
Authority: CN
Inventors: 杨楠; 尹斐
Original assignee: Harbin Medical University Daqing Branch
Current assignee: Harbin Medical University Daqing Branch
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-09
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to a reflux-preventing device for a venous indwelling needle, which comprises a jacket and a reflux-preventing mechanism, wherein a first clamping hole is formed in the jacket, an opening is formed in the upper end face of the jacket, the reflux-preventing mechanism penetrates through the jacket and the opening, a supporting rod is fixed in the bottom of the jacket, the supporting rod penetrates through a pushing block, and the pushing block penetrates through the bottom of the jacket and is connected to a knob in a meshed manner. This venous indwelling needle backflow preventing device, the flexible pipe on the venous indwelling needle is fixed to usable first draw-in hole and second draw-in hole block after putting the cover outside of venous indwelling needle in the cover, one side of flexible pipe is connected with the cover, the opposite side of flexible pipe is connected with the movable frame, after the infusion is accomplished, promote the kicking block earlier and make the rack leave the knob left, rotatory knob and lead screw afterwards, sleeve and movable frame wholly move left, conveniently press from both sides the flexible pipe to reach the effect of preventing back blood, reverse repeating the above-mentioned operation can open the flexible pipe, the resilience speed of flexible pipe is fast.

Description

Anti-reflux device for venous indwelling needle

Technical Field

The utility model relates to the technical field of venous indwelling needles, in particular to a reflux-preventing device of a venous indwelling needle.

Background

The intravenous transfusion is a most common nursing operation in clinical nursing work, has the advantages of quick administration, quick curative effect and the like, plays an important role in treating diseases and rescuing patients, and the intravenous indwelling needle consists of a stainless steel core, a soft outer sleeve and a plastic needle seat, and is an infusion tool which pierces the outer sleeve and the needle core into a blood vessel together during puncture, withdraws the needle core after the sleeve is sent into the blood vessel and only leaves the soft outer sleeve in the blood vessel for infusion.

The existing venous indwelling needle is communicated with the outside, after transfusion is completed and a transfusion tube is pulled out, blood is easy to flow back into the lumen of the indwelling needle, the blood is easy to flow back to cause catheter blockage, so that the next transfusion operation can be influenced, after the venous indwelling needle is clamped by the clamp for a long time, the rebound speed of the venous indwelling needle is low, the transfusion speed can be influenced, the abrasion rate of the venous indwelling needle is high, and the existing equipment is required to be improved according to the problems.

Disclosure of Invention

The utility model aims to provide a backflow preventing device for a venous indwelling needle, which solves the problems that the existing venous indwelling needle in the prior art is communicated with the outside, blood is easy to flow back into a lumen of the indwelling needle after transfusion is completed and a transfusion tube is pulled out, the backflow of the blood can cause blockage of a catheter, the next transfusion operation can be influenced, the rebound speed of the venous indwelling needle is low after the venous indwelling needle is clamped by a clamp for a long time, the transfusion speed is influenced, and the abrasion rate of the venous indwelling needle is high.

The utility model provides a backflow preventing device for a venous indwelling needle, which comprises a jacket and a backflow preventing mechanism, wherein a first clamping hole is formed in the jacket, an opening is formed in the upper end face of the jacket, and the backflow preventing mechanism penetrates through the jacket and the opening.

The bottom of the jacket is internally fixed with a supporting rod, the supporting rod penetrates through a pushing block, and the pushing block penetrates through the bottom of the jacket and is connected to the knob in a meshed mode.

Through above-mentioned technical scheme, with pressing from both sides the cover and putting in the outside of vein and putting the needle after can be in the same place pressing from both sides cover and vein and put the needle block connection with the vein, the sleeve is realized with the left and right movement of movable frame accessible rotatory knob and lead screw, conveniently clip or loosen the hose on the vein and put the needle, can close the hose after the infusion is accomplished, avoid back blood, need open the hose when infusing once more, movable frame removes and plays certain traction to the hose, make the hose can kick-back fast, need promote the ejector pad and make the rack leave the knob to the left before rotatory knob, can promote the ejector pad right after the knob is revolved and make the rack meshing connect on the knob, conveniently reach the effect of locking.

Preferably, two first clamping holes are formed, and the two first clamping holes are symmetrically formed in the jacket.

Through the technical scheme, the venous indwelling needle is required to be connected in the first clamping hole in a clamping mode in the process of installing the device.

Preferably, the backflow prevention mechanism comprises a knob, a screw rod, a sleeve, a moving frame and a second clamping hole, the knob penetrates through the opening, and the knob is in a gear shape.

Through the technical scheme, the screw rod can be driven to rotate by rotating the knob.

Preferably, a screw rod is fixed on one side of the knob, a sleeve is connected to the outer side of the screw rod in a threaded manner, and the sleeve is connected to the jacket in a sliding manner.

Through the technical scheme, the screw rod can drive the sleeve and the movable frame to integrally move left and right when rotating, so that the venous indwelling needle is conveniently closed or opened.

Preferably, the outside of the sleeve is fixed with a movable frame, and the movable frame is provided with a second clamping hole.

Through the technical scheme, the venous indwelling needle is required to be connected to the second clamping hole in a clamping mode in the process of installing the device.

Preferably, racks are fixed at the top of the pushing block and are connected to the bottom of the knob in a meshed mode, and the racks are distributed on the pushing block at equal intervals.

Through the technical scheme, the push block is pushed leftwards and the rack is separated from the knob to unlock the knob, and the push block is pushed rightwards and the rack is meshed and connected with the knob to lock the knob.

The technical means of the utility model has the following technical effects:

1. this venous indwelling needle backflow prevention device uses through the mutually supporting of clamp cover, first draw-in hole, knob, lead screw, sleeve, movable frame, second draw-in hole, ejector pad and rack that sets up, can reach the purpose of preventing backward flow and quick resilience, put the flexible pipe on the venous indwelling needle that can utilize first draw-in hole and second draw-in hole block to fix after the outside of venous indwelling needle with clamp cover, one side of flexible pipe is connected with clamp cover, the opposite side of flexible pipe is connected with movable frame, after the infusion is accomplished, promote the ejector pad first left and make the rack leave the knob, afterwards rotatory knob and lead screw, sleeve and movable frame wholly move left, conveniently press from both sides the flexible pipe to reach the effect of preventing the back blood, the flexible pipe can be opened in the reverse repeating above-mentioned operation, the resilience speed of flexible pipe is fast.

2. This venous indwelling needle backflow prevention device uses through the cooperation of knob, ejector pad and the rack that sets up, can reach the purpose of locking, can promote the ejector pad right after closing or opening the hose on the venous indwelling needle and make rack meshing connect on the knob, conveniently reach the effect of locking.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 3 is a schematic diagram of the front view of the present utility model;

FIG. 4 is a schematic top view of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

fig. 6 is a schematic diagram of a connection structure between a pushing block and a rack according to the present utility model.

In the figure: 1. a jacket; 2. a first clamping hole; 3. an opening; 4. a backflow prevention mechanism; 401. a knob; 402. a screw rod; 403. a sleeve; 404. a moving rack; 405. a second clamping hole; 5. a support rod; 6. a pushing block; 7. a rack.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The preferred embodiment of the anti-reflux device for the venous indwelling needle provided by the utility model is shown in fig. 1 to 3, and comprises a jacket 1 and an anti-reflux mechanism 4, wherein a first clamping hole 2 is formed in the jacket 1, an opening 3 is formed in the upper end face of the jacket 1, and the anti-reflux mechanism 4 penetrates through the jacket 1 and the opening 3.

A supporting rod 5 is fixed in the bottom of the jacket 1, the supporting rod 5 penetrates through a pushing block 6, and the pushing block 6 penetrates through the bottom of the jacket 1 and is connected to the knob 401 in a meshed mode.

In this embodiment, the first clamping holes 2 are two, and two first clamping holes 2 are symmetrically arranged on the jacket 1, after the jacket 1 is sleeved outside the venous indwelling needle, the jacket 1 can be clamped and fixed on the venous indwelling needle by using the first clamping holes 2 and the second clamping holes 405, so that the device is convenient to install, and meanwhile, the device can be clamped stably and firmly by using the two first clamping holes 2.

Example 2

On the basis of embodiment 1, as shown in fig. 4 to 6, in a preferred embodiment of the anti-reflux device for an iv pole, the anti-reflux mechanism 4 includes a knob 401, a screw 402, a sleeve 403, a moving rack 404 and a second clamping hole 405, the knob 401 penetrates through the opening 3, the knob 401 is in a gear shape, before rotating the knob 401, the push block 6 needs to be manually pushed leftwards and the rack 7 is separated from the knob 401, and then the knob 401 can be rotated, so that the screw 402 is conveniently driven to rotate.

In this embodiment, a screw rod 402 is fixed on one side of the knob 401, a sleeve 403 is connected to the outer side of the screw rod 402 in a threaded manner, the sleeve 403 is slidably connected to the jacket 1, the knob 401 can be rotated after the push block 6 is manually pushed leftwards and the rack 7 is separated from the knob 401, the screw rod 402 rotates along with the push block, and at the moment, the sleeve 403 slides leftwards under the limiting action of the jacket 1 and the screw rod 402, so that the moving frame 404 is driven to move leftwards, the infusion tube is conveniently and automatically clamped, and the condition of blood reflux is avoided.

Further, a moving frame 404 is fixed on the outer side of the sleeve 403, a second clamping hole 405 is formed in the moving frame 404, and an infusion tube is required to be clamped and connected in the first clamping hole 2 and the second clamping hole 405 in the process of installing the device, and when the knob 401 and the screw 402 are integrally rotated, the sleeve 403 and the moving frame 404 can integrally move left and right, so that a hose on the venous indwelling needle can be conveniently clamped or opened.

Furthermore, the rack 7 is fixed on the top of the push block 6, and the rack 7 is engaged and connected to the bottom of the knob 401, and the racks 7 are equally spaced on the push block 6, so that the push block 6 needs to be manually pushed leftwards and the rack 7 is separated from the knob 401 before the knob 401 is rotated, and the push block 6 is pushed rightwards and the rack 7 is engaged and connected to the knob 401 after the knob 401 is rotated, thereby facilitating locking of the knob 401.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

When the device is used, the device is sleeved on the outer side of a hose on the venous indwelling needle, then the hose on the venous indwelling needle is clamped in the first clamping hole 2 and the second clamping hole 405, after the venous indwelling needle and an external infusion tube are used for completing infusion operation, the pushing block 6 is pushed leftwards firstly, the rack 7 is separated from the knob 401, the knob 401 and the screw 402 are integrally rotated, the sleeve 403 is subjected to the limiting effect of the jacket 1 and the screw 402 to slide leftwards, the movable frame 404 moves leftwards along with the knob, the hose is clamped, the condition of blood return is avoided, the hose can be loosened and the hose is assisted to be opened by repeating the operation in a reverse mode, and the whole operation is completed.

In conclusion, the anti-reflux device of the venous indwelling needle achieves the purposes of reflux prevention, quick rebound and locking, and meets the use requirements of people.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a venous indwelling needle backflow prevention device, includes clamp cover (1) and backflow prevention mechanism (4), its characterized in that: the jacket (1) is provided with a first clamping hole (2), the upper end surface of the jacket (1) is provided with an opening (3), and the backflow prevention mechanism (4) penetrates through the jacket (1) and the opening (3);

a supporting rod (5) is fixed in the bottom of the jacket (1), the supporting rod (5) penetrates through the pushing block (6), and the pushing block (6) penetrates through the bottom of the jacket (1) and is connected to the knob (401) in a meshed mode.

2. A back flow prevention device for an intravenous catheter according to claim 1, wherein: the two first clamping holes (2) are symmetrically arranged on the jacket (1).

3. A back flow prevention device for an intravenous catheter according to claim 1, wherein: the backflow prevention mechanism (4) comprises a knob (401), a screw rod (402), a sleeve (403), a movable frame (404) and a second clamping hole (405), the knob (401) penetrates through the opening (3), and the knob (401) is in a gear shape.

4. A back flow prevention device for an intravenous catheter according to claim 3, wherein: one side of the knob (401) is fixed with a screw rod (402), the outer side of the screw rod (402) is connected with a sleeve (403) in a threaded mode, and the sleeve (403) is connected to the jacket (1) in a sliding mode.

5. A back flow prevention device for an intravenous catheter according to claim 3, wherein: the outside of sleeve (403) is fixed with removes frame (404), and has seted up second card hole (405) on removing frame (404).

6. A back flow prevention device for an intravenous catheter according to claim 3, wherein: the top of ejector pad (6) is fixed with rack (7), and rack (7) meshing is connected in the bottom of knob (401), rack (7) equidistant distribution is on ejector pad (6).