CN114681715A

CN114681715A - Blood return prevention device for pediatric nursing venous indwelling needle

Info

Publication number: CN114681715A
Application number: CN202210364178.9A
Authority: CN
Inventors: 谷翠霞
Original assignee: Henan Cancer Hospital
Current assignee: Henan Cancer Hospital
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-07-01

Abstract

The invention belongs to the technical field of venous indwelling needles, and particularly relates to a blood return prevention device for a pediatric nursing venous indwelling needle, which comprises a main body, wherein a main body transmission pipe is sleeved and connected at a first arc-shaped block, the other end of the main body transmission pipe is sleeved and connected at a second arc-shaped block, two ends of the first arc-shaped block and the second arc-shaped block are respectively provided with a connecting rope for adjustment, the other end of the connecting rope is sleeved and connected in a square block, a T-shaped rod for transmission is arranged in the square block, a first transmission handle for transmission is arranged at the side end of the first arc-shaped block, a U-shaped groove for positioning and connecting the main body transmission pipe is arranged at the upper end of the first arc-shaped block and the second arc-shaped block, the first arc-shaped block and the second arc-shaped block are fixedly sleeved at the wrist of a patient through the connecting ropes, the telescopic length of the connecting ropes is adjusted through the rotation of the T-shaped rod, so that the venous indwelling needle can be conveniently used for different patients, carry out effectual regulation fixed, and then improve the stability of main part, the effectual main part dislocation that prevents.

Description

Blood return prevention device for pediatric nursing venous indwelling needle

Technical Field

The invention belongs to the technical field of venous indwelling needles, and particularly relates to a blood return prevention device for a pediatric nursing venous indwelling needle.

Background

Intravenous injection is a fundamental method of treating disease, and currently, over 80% of patients need to receive different forms of intravenous infusion therapy during hospitalization, and vein treatment is always required to be continued until the treatment is finished, the existing vein indwelling needle is made of advanced biological materials and is generally used in European and American countries more than 40 years ago as a renewal product of a scalp needle, the vein indwelling needle is a nursing technology developed in nearly 20 years in China, and has good clinical effect, the vein indwelling needle is also called a trocar, and is composed of a steel needle core, a cannula and a plastic needle base, the outer cannula and the needle core are inserted into a blood vessel during puncture, when the cannula is sent into the blood vessel, the needle core is drawn out, and only the soft outer cannula is left in the blood vessel for transfusion, its advantages are no pain caused by repeated puncture, protecting blood vessel, high efficiency and high nursing quality.

Original paediatrics nursing vein is detained needle and is prevented blood return device single structure because child likes indiscriminate moving, leads to when using, and is fixed through the adhesive tape, comes unstuck easily, causes to keep somewhere the needle dislocation, causes the blood backward flow, and then leads to the device can not continue to use, and medical staff need puncture work again, causes the secondary injury to children.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the blood return prevention device for the pediatric nursing venous indwelling needle, which has the characteristics of simple structure, compact connection, good fixity, difficult dislocation and better comfort level.

In order to achieve the purpose, the invention provides the following technical scheme: a blood return prevention device for a pediatric nursing venous indwelling needle comprises a main body, wherein a main body transmission pipe is connected to a first arc-shaped block in a sleeved mode, the other end of the main body transmission pipe is connected to a second arc-shaped block in a sleeved mode, both ends of the first arc-shaped block and the second arc-shaped block are provided with connecting ropes for adjustment, the other end of each connecting rope is connected to a square block in a sleeved mode, a T-shaped rod for transmission is arranged in the square block, a first transmission handle for transmission is arranged at the side end of the first arc-shaped block, a U-shaped groove for positioning connection of the main body transmission pipe is formed in the upper end of the first arc-shaped block, a limiting block for limiting the main body transmission pipe is arranged in the U-shaped groove of the first arc-shaped block, the other end of the limiting block is connected with the transmission block, telescopic grooves which are uniformly distributed are formed in the connection position of the transmission block and the limiting block, a circular convex block is arranged at the upper end of the second arc-shaped block, and the second arc-shaped block are connected with a sliding block through the circular convex block, the upper end of the sliding block is provided with a second transmission handle for transmission.

According to the preferable technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the other end of the first transmission handle is provided with a bevel tooth groove for transmission, the first transmission handle is meshed and connected with the bevel tooth groove at the upper end of the transmission pair through the bevel tooth groove, the transmission pair is meshed and connected with the first transmission rack through the gear groove at the other end, two ends of the first transmission rack are meshed and connected with the tooth groove at the lower end of the transmission rod through the tooth groove, and the middle of the transmission rod is screwed and connected with the thread groove at the transmission block through threads.

According to the preferable technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the lower ends of the first arc-shaped block and the second arc-shaped block are fixedly connected with the connecting rope, the other end of the connecting rope is connected to the T-shaped rod in a sleeved mode, the two ends of the T-shaped rod are provided with the I-shaped blocks for limiting, the I-shaped blocks are I-shaped and annular, the middle of the T-shaped rod is provided with the worm straw, and the worm of the T-shaped rod is connected with the transmission turbine in a meshed mode through the tooth socket.

According to the preferable technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the other end of the limiting block is fixedly connected with a limiting telescopic rod, the other end of the limiting telescopic rod is provided with an annular convex block for limiting, the limiting telescopic rod is sleeved and connected with a telescopic groove, and a return spring for resetting the limiting block is arranged in the telescopic groove.

According to the preferable technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the lower end of the second transmission handle is provided with a transmission gear groove, the second transmission handle is meshed and connected with the second transmission rack through the gear groove, the second transmission rack is meshed and connected with the gear groove at the upper end of the threaded rod through a tooth groove, and the lower end of the threaded rod is screwed and connected with the internal thread of the circular block at the second arc-shaped block through an external thread.

As a preferred technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the lower end of the limiting block is provided with the uniformly distributed dense grooves, V-shaped grooves are formed among the dense grooves, and the contact part of the limiting block is in a notch shape which is arc-shaped.

According to the preferable technical scheme of the blood return prevention device for the pediatric nursing venous indwelling needle, the upper end of the square block is provided with the flexible pad for improving the wearing comfort level, and the flexible pad is internally provided with the high-elasticity flexible filling component.

Compared with the prior art, the invention has the beneficial effects that:

1. through the arrangement of the first arc-shaped block and the second arc-shaped block, the first arc-shaped block and the second arc-shaped block are fixedly sleeved on the wrist of the patient through the connecting rope, and the telescopic length of the connecting rope is adjusted through the rotation of the T-shaped rod, so that the main body can be effectively adjusted and fixed according to different patients, the stability of the main body is further improved, and the main body can be effectively prevented from being misplaced;

2. through the arrangement of the transmission block, the transmission block is driven by the first transmission handle to drive the limiting block to slide, so that the transmission pipe at the main body is extruded and clamped, the main body transmission pipe is stressed and bent, and then is isolated to play a role in preventing backflow, meanwhile, the lower end of the limiting block is provided with uniformly distributed dense grooves, the dense grooves not only play a role in clamping and preventing the main body transmission pipe, but also improve the isolation effect on the main body transmission pipe, and therefore blood backflow is prevented;

3. through the arrangement of the limiting block, the limiting block is connected with the transmission block through the reset spring, the upper end of the limiting block is in an arc-shaped inverted angle shape, the main body transmission pipe is placed at the first arc-shaped block conveniently, and the main body transmission pipe is limited through the reset capacity of the reset spring;

4. through the setting of sliding block, this department drives the flexible slip of sliding block through the transmission of No. two transmission handles, and then plays limiting displacement to the main part other end to the installation dismantlement effect of the main part of being convenient for, the used repeatedly of an arc piece of being convenient for and No. two arc pieces improves the result of use of device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a transmission connection structure of a first transmission handle in the invention;

FIG. 3 is a schematic view of a partial cross-sectional structure of the stopper of the present invention;

FIG. 4 is a schematic sectional view of the slider in the present invention;

FIG. 5 is a schematic top view of a square block of the present invention;

in the figure: 1. a main body; 2. a first arc-shaped block; 3. a second arc-shaped block; 4. connecting ropes; 5. a square block; 6. a flexible pad; 7. a T-shaped rod; 8. a first transmission handle; 9. a limiting block; 10. a slider; 11. a second transmission handle; 12. a transmission block; 13. a transmission rod; 14. a first transmission rack; 15. a transmission pair; 16. limiting the telescopic rod; 17. a telescopic groove; 18. a return spring; 19. a dense groove; 20. a second transmission rack; 21. a threaded rod; 22. a drive turbine; 23. an I-shaped block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-5, the present invention provides the following technical solutions: a blood return prevention device for a pediatric nursing venous indwelling needle comprises a main body 1, a transmission pipe of the main body 1 is sleeved and connected at a first arc-shaped block 2, the other end of the main body is sleeved and connected at a second arc-shaped block 3, two ends of the first arc-shaped block 2 and the second arc-shaped block 3 are respectively provided with a connecting rope 4 for adjustment, the other end of the connecting rope 4 is sleeved and connected in a square block 5, a T-shaped rod 7 for transmission is arranged in the square block 5, a first transmission handle 8 for transmission is arranged at the side end of the first arc-shaped block 2, a U-shaped groove for positioning and connecting the transmission pipe of the main body 1 is arranged at the upper end of the first arc-shaped block 2, a limiting block 9 for limiting the transmission pipe of the main body 1 is arranged in the U-shaped groove of the first arc-shaped block 2, the other end of the limiting block 9 is connected with a transmission block 12, a uniformly distributed telescopic groove 17 is arranged at the connecting part of the transmission block 12 and the limiting block 9, a circular convex block is arranged at the upper end of the second arc-shaped block 3, the second arc-shaped block 3 is connected with a sliding block 10 through the circular convex block, the upper end of the sliding block 10 is provided with a second transmission handle 11 for transmission.

It is specific, No. 8 other ends of transmission handle are equipped with and are used for driven skewed tooth's socket, No. 8 transmission handles are connected through skewed tooth's socket and the vice 15 upper end skewed tooth's socket meshing of transmission, the vice 15 gear groove and the 14 meshing of a transmission rack of transmission through the other end are connected, 14 both ends of a transmission rack are connected through tooth's socket and 13 lower extreme tooth's socket meshing of transfer line, the department closes soon with the thread groove of transmission piece 12 department through the screw thread in the middle of the transfer line 13 and is connected, through a transmission handle 8 transmission in this embodiment, it slides to drive stopper 9, and then extrude the centre gripping to the transmission pipe of main part 1 department, make main part 1 transmission pipe atress crooked, make inside passage cut off.

Specifically, 3 lower extremes of arc piece 2 and No. two arc pieces all with be connected 4 fixed connection of rope, it connects 7 departments at T shape pole to connect 4 other ends registries of rope, 7 both ends of T shape pole are equipped with and are used for spacing I-shaped piece 23, I-shaped piece 23 is the I-shaped, and be the annular form, department establishes to the worm straw in the middle of the

T shape pole

7, 7 worms of T shape pole department is connected with the meshing of transmission turbine 22 through the tooth's socket, through the rotation of T shape pole 7 in this embodiment, adjust the flexible length of connecting rope 4, thereby be convenient for according to the patient of difference, it is fixed to carry out effectual regulation, and then improve the stability of main part 1, effectually prevent main part 1 dislocation.

Specifically, stopper 9 other end fixedly connected with is spacing telescopic link 16, and the 16 other ends of spacing telescopic link are equipped with limiting displacement's annular lug, and spacing registrate connects in flexible groove 17 department, is equipped with reset spring 18 that is used for stopper 9 to reset in the flexible groove 17, and the ability of resetting through reset spring 18 in this embodiment carries on spacingly to main part 1 transmission pipe, through the V-arrangement recess that the mutual arc breach of stopper 9 formed, the location of the 1 transmission pipe of main part of being convenient for is placed.

Specifically, No. two transmission handle 11 lower extremes are equipped with and are used for transmission gear groove, No. two transmission handle 11 meshes through gear groove and No. two transmission rack 20 and is connected, No. two transmission rack 20 meshes through tooth's socket and 21 upper end gear grooves of threaded rod and is connected, threaded rod 21 lower extreme closes soon through the internal thread of external screw thread and No. two arc pieces 3 circular blocks to be connected, through No. two transmission handle 11 transmissions in this embodiment, drive the flexible slip of sliding block 10, and then play limiting displacement to the 1 other end of main part.

Specifically, stopper 9 lower extreme is equipped with evenly distributed's intensive groove 19, and intensive groove 19 forms the recess of V-arrangement each other, and stopper 9 mutual contact department establishes to the breach form, and the breach is the arc form setting, and intensive groove 19 not only plays the centre gripping antiskid to main part 1 transmission pipe in this embodiment, also improves the wall effect to main part 1 transmission pipe simultaneously to prevent blood backward flow.

Specifically, the upper end of the square block 5 is provided with a flexible pad 6 for improving wearing comfort, and a flexible filling member with high elasticity is arranged in the flexible pad 6, wherein the flexible pad 6 plays a role in reducing rigid extrusion force of the square block 5, so that the wearing comfort of the device is improved.

The working principle and the using process of the invention are as follows: the invention is characterized in that a first arc-shaped block 2 and a second arc-shaped block 3 are sleeved at the wrist of a patient, a T-shaped rod 7 is rotated, the T-shaped rod 7 rotates to wind a connecting rope 4, thereby reducing the length of the connecting rope 4, further, the first arc-shaped block 2 and the second arc-shaped block 3 are fixed at the wrist of the patient, a main body 1 is inserted at the vein of the wrist of the patient, a transmission pipe of the main body 1 and a limiting block 9 are positioned and pressed downwards, the limiting block 9 improves the stress and the extension of an arc surface, further, the transmission pipe of the main body 1 is inserted at the first arc-shaped block 2, the limiting block 9 loses the extrusion and the reset, further, the transmission pipe of the main body 1 is limited, the other end of the main body 1 is inserted at the second arc-shaped block 3, after the position is suitable, a second transmission handle 11 is rotated, the second transmission handle 11 drives a tooth socket at the upper end of a threaded rod 21 to rotate through a second transmission rack 20, and the lower end of the threaded transmission at the sleeved position of the second arc-shaped block 3 is used in the rotation process of the threaded rod 21, drive sliding block 10 and slide, and then fix the main part 1 other end is spacing No. two arc pieces 3 departments, after the infusion, rotate a drive handle 8, a drive handle 8 drives the vice 15 rotations of transmission through the oblique tooth's socket of the other end, the vice 15 of transmission drives a drive rack 14 through the gear groove of the other end and rotates, a drive rack 14 drives transfer line 13 through the tooth's socket and rotates, transfer line 13 closes with transmission piece 12 soon through the screw thread of middle department, and then adjust the height of transmission piece 12, the transmission piece 12 slides in-process, with the extrusion of main part 1 transmission pipe, and the effect through dense groove 19, make the inside passageway of main part 1 transmission pipe be in the driving state can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a needle blood return prevention device is kept somewhere to paediatrics nursing vein which characterized in that: comprises a main body (1), wherein a transmission pipe of the main body (1) is sleeved and connected at a first arc-shaped block (2), the other end of the main body is sleeved and connected at a second arc-shaped block (3), two ends of the first arc-shaped block (2) and the second arc-shaped block (3) are respectively provided with a connecting rope (4) for adjustment, the other end of the connecting rope (4) is sleeved and connected in a square block (5), a T-shaped rod (7) for transmission is arranged in the square block (5), a first transmission handle (8) for transmission is arranged at the side end of the first arc-shaped block (2), a U-shaped groove for positioning and connecting the transmission pipe of the main body (1) is arranged at the upper end of the first arc-shaped block (2), a limiting block (9) for limiting the transmission pipe of the main body (1) is arranged in the U-shaped groove of the first arc-shaped block (2), the other end of the limiting block (9) is connected with a transmission block (12), and telescopic grooves (17) which are uniformly distributed are arranged at the joint of the limiting block (9), no. two arc blocks (3) upper ends are equipped with circular convex block, No. two arc blocks (3) are connected with sliding block (10) through circular convex block, sliding block (10) upper end is equipped with No. two transmission handle (11) that are used for the transmission.

2. The pediatric nursing venous indwelling needle blood return prevention device of claim 1, wherein: a transmission handle (8) other end is equipped with and is used for driven skewed tooth groove, a transmission handle (8) is connected through skewed tooth's socket and the vice (15) upper end skewed tooth groove meshing of transmission, the vice (15) gear groove and a driving rack (14) meshing of passing through the other end of transmission are connected, driving rack (14) both ends are connected through tooth's socket and the meshing of transfer line (13) lower extreme tooth's socket, department closes soon through the thread groove of screw thread and transmission piece (12) department in the middle of transfer line (13) and is connected.

3. The pediatric nursing venous indwelling needle blood return prevention device of claim 1, wherein: arc piece (2) and No. two arc pieces (3) lower extreme all with be connected rope (4) fixed connection, it connects in T shape pole (7) department to connect rope (4) other end registrate, T shape pole (7) both ends are equipped with and are used for spacing I-shaped piece (23), I-shaped piece (23) are the I-shaped, and are the annular form, department establishes to the worm straw in the middle of T shape pole (7), T shape pole (7) worm department is connected with drive turbine (22) meshing through the tooth's socket.

4. The paediatrics care venous indwelling needle blood return prevention device of claim 1, which is characterized in that: the limiting device is characterized in that the other end of the limiting block (9) is fixedly connected with a limiting telescopic rod (16), the other end of the limiting telescopic rod (16) is provided with an annular convex block with a limiting effect, the limiting telescopic rod is connected to the position of a telescopic groove (17) in a limiting sleeved mode, and a reset spring (18) used for resetting the limiting block (9) is arranged in the telescopic groove (17).

5. The pediatric nursing venous indwelling needle blood return prevention device of claim 1, wherein: no. two transmission handle (11) lower extremes are equipped with and are used for transmission gear groove, No. two transmission handle (11) are connected through gear groove and No. two transmission rack (20) meshing, No. two transmission rack (20) are connected through tooth's socket and threaded rod (21) upper end gear groove meshing, threaded rod (21) lower extreme closes soon through the internal thread of external screw thread and No. two arc piece (3) department circular block and is connected.

6. The pediatric nursing venous indwelling needle blood return prevention device of claim 1, wherein: stopper (9) lower extreme is equipped with evenly distributed's dense groove (19), form the recess of V shape each other in dense groove (19), stopper (9) mutual contact department establishes to the breach form, and the breach is the arc form setting.

7. The pediatric nursing venous indwelling needle blood return prevention device of claim 1, wherein: square piece (5) upper end is equipped with flexible pad (6) that are used for improving the comfort level of wearing, it is equipped with the flexible filler member that has high elasticity in flexible pad (6).