CN112075966A

CN112075966A - Vein compression device for venipuncture

Info

Publication number: CN112075966A
Application number: CN202010875850.1A
Authority: CN
Inventors: 齐鹏; 李元昊
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-15

Abstract

The invention relates to a vein compression device for venipuncture, which comprises a base module, a moving module and an air pressure tourniquet module, wherein the air pressure tourniquet module is fixed on the base module through the moving module and comprises a locking mechanism, an air bag control assembly and an air bag assembly, one end of the air bag assembly is movably connected with the locking mechanism through an electromagnet, the air bag assembly comprises a tourniquet air bag and a coating air bag, the coating air bag is coated on the outer ring of the tourniquet air bag, the air bag control assembly is respectively connected with the tourniquet air bag and an air cavity of the coating air bag, and the coating air bag is composed of a plurality of air bag units which are sequentially connected. Compared with the prior art, the rubber tourniquet can completely replace the rubber tourniquet used in the existing venipuncture process, reduces the operation requirements of medical personnel, and effectively improves the working efficiency of venipuncture.

Description

Vein compression device for venipuncture

Technical Field

The invention relates to the field of intelligent medical instruments, in particular to a vein compression device for venipuncture.

Background

Venipuncture is one of the most basic clinical care technical operations, occupies an important position in clinical care work, and is widely applied to various medical scenes. Venipuncture is the key to ensure the success of patient treatment and critical patient rescue. Due to the characteristics of high use frequency, wide use range and basic property, and the restriction and interference of various factors such as the vascular condition, the skin state, the age, the obesity degree and the like of a patient, medical accidents caused by the failure of venipuncture become one of the most major medical accidents in the world.

The venipuncture method mainly applied at present is a puncture method of a single rubber tourniquet, and the process is as follows: the patient position is random, and the limbs relax, selects the blood vessel of hand back, pricks 1 with the rubber tourniquet in the 6cm department above the point of venipuncture, disinfects the skin with iodine, and alcohol deiodination waits to dry, and the needle handle is held to the right hand, selects the angle of inserting the needle, and the advice patient lightly holds the fist, inserts the needle on the blood vessel of selection, sees to advance the syringe needle forward slightly again after the blood return, accomplishes the puncture of syringe needle to the vein. However, this method has the following drawbacks: 1. when a tourniquet is pricked, the poor circulation of peripheral veins and poor filling of veins can occur to fat people or people with low vein appearance degree, so that the vein appearance degree is insufficient, and the needle insertion is difficult due to the insufficient filling degree. 2. When the tourniquet is loosened, sudden pressure suddenly decreases, the skin and blood vessels stretch or rebound, and the needle point is easy to puncture the blood vessels or fall out of the blood vessels, so that the liquid extravasation causes puncture failure.

In order to solve the problems, the tourniquet double-ligation method is adopted for venipuncture at present, but the process of the double-ligation method is more complicated, and the time and labor burden of the whole venipuncture is increased. Meanwhile, the limitation of the rubber tourniquet is not solved by the single-binding method or the double-binding method: the tension of the tourniquet is difficult to control, which causes uneven pressure action points and unobvious vein filling.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a vein compression device for venipuncture, which replaces the existing rubber tourniquet to compress the arm vein, so that the arm vein is in the optimal filling state.

The purpose of the invention can be realized by the following technical scheme:

a vein compression device for venipuncture comprises a base module, a movable module and an air pressure tourniquet module, wherein the air pressure tourniquet module is fixed on the base module through the movable module and comprises a locking mechanism, an air bag control assembly and an air bag assembly, one end of the air bag assembly is rotatably connected with the locking mechanism, the other end of the air bag assembly is movably connected with the locking mechanism through an electromagnet, the air bag assembly comprises a tourniquet air bag and a coating air bag, the coating air bag is wrapped on the outer ring of the tourniquet air bag, the air bag control assembly is installed in a shell of the locking mechanism and is respectively connected with the tourniquet air bag and an air cavity of the coating air bag, the coating air bag comprises a plurality of air bag units which are sequentially connected, each air bag unit comprises a side plate, an attaching end and an expanding end, two adjacent air bag units are connected through the side plate, and the, the expansion end is positioned on the opposite surface of the attaching end, and the vent holes are arranged on the side plates to ensure that the air cavities of all the air bag units are communicated with each other.

Further, the gasbag control assembly include miniature air pump, first normally closed solenoid valve, second normally closed solenoid valve, first two-position three way solenoid valve and second two three way solenoid valve, the air cavity of tourniquet gasbag loops through first two three way solenoid valve and first normally closed solenoid valve and connects miniature air pump, the air cavity of cladding gasbag loops through second two three way solenoid valve and second normally closed solenoid valve and connects miniature air pump.

Further, a pressure sensor is arranged between the air cavity of the tourniquet air bag and the first two-position three-way electromagnetic valve, and a pressure sensor is arranged between the air cavity of the coating air bag and the second two-position three-way electromagnetic valve.

Furthermore, each air bag unit is also provided with a reinforcing plate, the reinforcing plate is positioned on one side of the joint end in the air cavity, and a buffer chamber is formed between the reinforcing plate and the joint end.

Furthermore, two pneumatic tourniquet modules which are installed side by side are arranged on the movable module.

Further, the mobile module comprises two slide rails and two slide bars, the two slide bars form a slide bar unit after being mutually embedded in a collinear manner through a rack structure, the two slide rails are respectively connected with two ends of the slide bar unit in a sliding manner, the slide rails are installed on the base module, and the two air pressure tourniquet modules are installed on the same side face of the slide bar unit and are respectively installed on one slide bar.

Further, all be equipped with the motor on every slide rail, the motor is used for connecting the draw runner that this slide rail links to each other.

Further, the moving module comprises a rail and a sliding block which are connected with each other, and the locking mechanism is connected with the sliding block so that the pneumatic tourniquet module can slide along the rail.

Further, the tourniquet device further comprises an infrared image recognition mechanism arranged above the air pressure tourniquet module.

Further, the base module include arm support and bottom plate, arm support be located the both sides of bottom plate, removal module both ends fix the side at arm support, atmospheric pressure tourniquet module hang in between two arm supports.

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

1. according to the invention, the moving position of the air pressure tourniquet module is controlled by the moving module, and then the compression on the vein of the arm is realized by the air pressure tourniquet module, wherein the air pressure tourniquet module comprises a tourniquet air bag and a coating air bag. Therefore, the rubber tourniquet can completely replace the existing rubber tourniquet, reduces the operation requirements of medical personnel, and effectively improves the working efficiency of venipuncture.

2. The invention can accurately control the compression force of the compression hemostasis module on the arm vein by arranging the air bag control assembly, and can adjust and maintain the compression force in real time, so that the vein in the arm keeps the optimal filling and display state, and the subsequent puncture work is facilitated. The air bag control assembly can also be provided with a pressure sensor, so that the precision of the control of the compression force is further improved.

3. Set up the reinforcing plate in every gasbag unit of cladding gasbag, improved gasbag unit's bulk strength to form the surge chamber at the laminating end of gasbag unit, make its and tourniquet gasbag's effort more even stable, thereby make the tourniquet gasbag even and change gently to the oppression force distribution of arm vein.

4. The tourniquet can be provided with two air pressure tourniquet modules to replace the traditional tourniquet double-binding method, the manual operation process is simplified through a mechanical structure, and the working efficiency is improved.

5. The mobile module can adopt a combined structure of two slide rails and two slide bars, and has the advantages of simple structure, small occupied space and easy disassembly and maintenance.

6. Be equipped with the arm support on the base module, be convenient for placing of arm to cooperate with the atmospheric pressure tourniquet module and realize the oppression of arm vein work usefulness.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a schematic structural view of a pneumatic tourniquet module.

Fig. 3 is a schematic view of the structure of the airbag module.

Fig. 4 is a schematic structural view of an airbag unit.

Fig. 5 is a schematic structural diagram of an air bag control assembly.

Fig. 6 is a schematic structural diagram of a base module.

Reference numerals: 1. the device comprises a base module, 11, an arm support, 12, a bottom plate, 2, a moving module, 21, a sliding rail, 22, a sliding strip, 23, a rack structure, 24, a motor, 3, an air pressure tourniquet module, 31, a locking mechanism, 32, an air bag component, 321, a tourniquet air bag, 322, a coating air bag, 322a, an air bag unit, 322a-1, a side plate, 322a-2, a joint end, 322a-3, an expansion end, 322a-4, a vent hole, 322a-5, a reinforcing plate, 322a-6, a buffer chamber, 33, an air bag control component, 331, a micro air pump, 332, a first normally closed electromagnetic valve, 333, a second normally closed electromagnetic valve, 334, a first two-position three-way electromagnetic valve, 335, a second two-position three-way electromagnetic valve, 336, a pressure sensor, 337, a control panel, 4 and an infrared image.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example one

As shown in fig. 1, the present embodiment provides a venous compression device capable of being applied to a venipuncture double-ligation method, which includes a base module 1, a moving module 2, and two pneumatic tourniquet modules 3. Two atmospheric pressure tourniquet modules 3 are installed side by side on mobile module 2, and mobile module 2 fixes on base module 1, and the concrete expansion of structure is as follows:

the pneumatic tourniquet module 3 is shown in fig. 2. The pneumatic tourniquet module 3 comprises a locking mechanism 31, a balloon control assembly 33 and a balloon assembly 32. One end of the airbag module 32 is rotatably connected to the locking mechanism 31 through a hinge or the like, and the other end is provided with a magnetically attractable material sheet such as an iron sheet. An electromagnet is arranged on the top surface of the locking mechanism 31, and the end part of the air bag assembly 32 with the magnetic material sheet is movably connected with the locking mechanism 31 through the electromagnet. The air bag control assembly 33 is mounted inside the housing of the locking mechanism 31 and is therefore not shown in the figures.

The balloon assembly 32 is shown in fig. 3 and includes a tourniquet balloon 321 and a cover balloon 322. The tourniquet air bag 321 is a broken annular air bag, and the coating air bag 322 is wrapped on the outer ring of the annular air bag. The covered airbag 322 is composed of a plurality of airbag units 322a connected in series. Each air bag unit 322a is shown in FIG. 4 as including a side panel 322a-1, an attachment end 322a-2, and an expansion end 322 a-3. Two adjacent airbag units 322a are connected by a side panel 322 a-1; the attaching end 322a-2 is connected with the tourniquet air bag 321; the expanded end 322a-3 is located opposite the conforming end 322 a-2. An air cavity is formed between the abutting end 322a-2 and the expanding end 322 a-3. Vent holes 322a-4 are provided in the side plate 322a-1 to communicate the air chambers of all the air bag units 322a with each other, thereby forming air chambers to enclose the air bags 322. Each air bag unit 322a is also provided with a fiber plate as a reinforcing plate 322a-5, the fiber direction is transverse, the reinforcing plate 322a-5 is positioned at one side of the joint end 322a-2 in the air cavity, and a buffer chamber 322a-6 is formed between the reinforcing plate 322a-5 and the joint end 322 a-2. The arrangement of the reinforcing plates 322a-5 improves the overall strength of each air bag unit 322a, and the formed buffer chambers 322a-6 enable the acting force of the covering air bags 322 and the tourniquet air bags 321 to be more uniform and stable, so that the pressing force of the tourniquet air bags 321 on the arm veins is uniformly distributed and changes smoothly. When the cavity of the covering air bag 322 is inflated, the covering air bag 322 is controllably expanded and deformed, so that the tourniquet air bag 321 is bent along with the covering air bag 322. When the covered airbag 322 is completely deformed, the magnetically attractable material piece on the airbag module 32 contacts the electromagnet for attraction.

The air bag control assembly 33, as shown in fig. 5, includes a micro air pump 331, a first normally closed solenoid valve 332, a second normally closed solenoid valve 333, a first two-position three-way solenoid valve 334 and a second two-position three-way solenoid valve 335. The above components are also connected to a control board 337. The air chamber of the tourniquet air bag 321 is connected with the micro air pump 331 through the first two-position three-way electromagnetic valve 334 and the first normally closed electromagnetic valve 332 in sequence to form a first air path; the air chamber of the coating air bag 322 is connected with the micro air pump 331 through the second two-position three-way electromagnetic valve 335 and the second normally closed electromagnetic valve 333 in turn to form a second air path. A pressure sensor 336 is arranged between the air chamber of the tourniquet air bag 321 and the first two-position three-way electromagnetic valve 334; a pressure sensor 336 is also arranged between the air chamber of the cladding air bag 322 and the second two-position three-way electromagnetic valve 335. The pressure sensor 336 is disposed in the gas path, and measures current pressure information by detecting a gas pressure value and feeds back the current pressure information to the control board 337. The principle of the air bag control assembly 33 is: in the second air path, the micro air pump 331 is connected to an air inlet end of the second normally closed solenoid valve 333, and the second two-position three-way solenoid valve 335 is connected to an air outlet end of the second normally closed solenoid valve 333. When the power is on, the second normally closed electromagnetic valve 333 opens the communication air path, and the micro air pump 331 inflates the coating air bag 322; when the power is off, the second normally closed solenoid valve 333 is kept closed, and the target airbag pressure is maintained. When the second two-position three-way electromagnetic valve 335 is electrified, the second normally closed electromagnetic valve 333 is communicated with the tourniquet air bag 321, and the air path is disconnected with the external environment; when the second two-position three-way electromagnetic valve 335 is powered off, the external environment is communicated, and the gas in the target air bag is discharged. The pressure sensor 336 is used to detect the pressure of the target airbag and transmit the pressure information to the control board 337. The control board 337 can determine the deformed covering state of the covering airbag 322 according to the air pressure change, thereby determining whether the pre-winding of the arm is completed. In the first air path, the on-off relationship among the micro air pump 331, the first normally closed solenoid valve 332 and the first two-position three-way solenoid valve 334 is the same as the on-off relationship among the micro air pump 331, the second normally closed solenoid valve 333 and the second two-position three-way solenoid valve 336 in the second air path, and only the target air bag is changed to the tourniquet air bag 321, so repeated description is omitted.

The mobile module 2, as shown in fig. 1 and 2, comprises two slide rails 21 and two slide bars 22. The two sliding bars 22 are mutually collinear and embedded through the rack structure 23 to form a sliding bar unit, and the two sliding rails 21 are respectively connected with two ends of the sliding bar unit in a sliding manner. The slide rail 21 is mounted on the base module 1, and the locking mechanisms 31 of the two pneumatic tourniquet modules 3 are mounted on the same side of the slide unit and on one slide 22 respectively. A motor 24 is provided on each slide rail 21, the motor 24 being adapted to connect the slide 22 proximate the proximal end to which the slide rail 21 is connected. This structure can drive the slide bar 22 to move through the motor 24, so that the slide bar 22 drives the two pneumatic tourniquet modules 3 to move.

The base module 1, as shown in fig. 6, includes an arm support 11 and a base plate 12. The arm support 11 is located on two sides of the bottom plate 12, and a concave surface for placing an arm is arranged on the top of the arm support 11. Two ends of the moving module 2, specifically two sliding rails 21 are fixed on the side surfaces of the two arm supports 11, so that the pneumatic tourniquet module 3 is integrally suspended between the two arm supports 11.

One side of the vein compression device is also provided with the existing infrared image recognition mechanism 4 or a puncture mechanism which can be positioned above the air pressure tourniquet module 3.

The working principle of the embodiment is as follows: firstly, the arm of a patient is placed on an arm support 11, the infrared image recognition mechanism acquires data information of the arm through a camera 4, and the data information is fed back to an external computer for lifting. The computer controls the venous compression device to start working after processing the data. Firstly, the computer controls the two groups of pneumatic tourniquet modules 3 to move in the middle of the arm support 11, and the positions of the pneumatic tourniquet modules at the venipuncture point are adjusted. After the position is adjusted, the micro air pump 331 firstly inflates the covering air bag 322 through the air bag control component 33, and the covering air bag 322 inflates at the expansion end 322a-3 when being inflated, so that the air bag component 32 automatically bends, and the tourniquet air bag 321 can be pre-wound on the designated area of the arm. Meanwhile, the electromagnet is turned on to ensure the fastening after the winding is finished. Then, the micro air pump 331 inflates the tourniquet air bag 321, further fixes the arm, and increases the pressure of the local vein on the arm, so that the ligated lower vein is filled to facilitate puncture. Finally, the air pressure is finely adjusted through the air bag control component 33 according to the real-time feedback information of the tourniquet pressure air bag, so that the optimal filling state and the display state of the vein are maintained, and the maximum success rate can be conveniently obtained in the subsequent mechanical venipuncture implementation. The above work can also be replaced by the automatic control of a full computer through manual operation.

Example two

The overall structure and principle of the present embodiment are substantially the same as those of the first embodiment, and the differences are as follows: the embodiment provides a vein compression device capable of being applied to a venipuncture single-ligation method, which comprises a base module, a moving module and an air pressure tourniquet module. The pneumatic tourniquet module is arranged on the movable module, and the movable module is fixed on the base module. The moving module comprises a track and a sliding block which are connected with each other, and the locking mechanism is connected with the sliding block so that the pneumatic tourniquet module can slide along the track.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A vein compression device for venipuncture is characterized by comprising a base module (1), a moving module (2) and an air pressure tourniquet module (3), wherein the air pressure tourniquet module (3) is fixed on the base module (1) through the moving module (2), the air pressure tourniquet module (3) comprises a locking mechanism (31), an air bag control component (33) and an air bag component (32), one end of the air bag component (32) is rotatably connected with the locking mechanism (31), the other end of the air bag component is movably connected with the locking mechanism (31) through an electromagnet, the air bag component (32) comprises a tourniquet air bag (321) and a coating air bag (322), the coating air bag (322) is coated on the outer ring of the tourniquet air bag (321), the air bag control component (33) is installed in a shell of the locking mechanism (31) and is respectively connected with the tourniquet air bag (321) and an air cavity of the coating air bag (322, the coated air bag (322) is composed of a plurality of air bag units (322a) which are connected in sequence, each air bag unit (322a) comprises a side plate (322a-1), an attaching end (322a-2) and an expanding end (322a-3), two adjacent air bag units (322a) are connected through the side plate (322a-1), the attaching end (322a-2) is connected with the tourniquet air bag (321), the expanding end (322a-3) is located on the opposite surface of the attaching end (322a-2), and vent holes (322a-4) are formed in the side plate (322a-1) to enable air chambers of all the air bag units (322a) to be communicated with each other.

2. The vein compression device for venipuncture according to claim 1, wherein the air bag control assembly (33) comprises a micro air pump (331), a first normally closed solenoid valve (332), a second normally closed solenoid valve (333), a first two-position three-way solenoid valve (334) and a second two-position three-way solenoid valve (335), the air chamber of the tourniquet air bag (321) is connected with the micro air pump (331) sequentially through the first two-position three-way solenoid valve (334) and the first normally closed solenoid valve (332), and the air chamber of the covered air bag (322) is connected with the micro air pump (331) sequentially through the second two-position three-way solenoid valve (335) and the second normally closed solenoid valve (333).

3. A venous compression device for venipuncture according to claim 2, wherein a pressure sensor (336) is provided between the air chamber of the tourniquet air chamber (321) and the first two-position three-way solenoid valve (334), and a pressure sensor (336) is provided between the air chamber of the cover air chamber (322) and the second two-position three-way solenoid valve (335).

4. A venous compression device for venipuncture according to claim 1 wherein each bladder unit (322a) is further provided with a reinforcing plate (322a-5), said reinforcing plate (322a-5) is located at one side of the abutting end (322a-2) in the air chamber, and a buffer chamber (322a-6) is formed between the reinforcing plate (322a-5) and the abutting end (322 a-2).

5. A venous compression device for venipuncture according to claim 1 characterized in that two pneumatic tourniquet modules (3) are provided on the moving module (2) mounted side by side.

6. A vein compression device for venipuncture according to claim 5, wherein said moving module (2) comprises two sliding rails (21) and two sliding bars (22), said two sliding bars (22) are embedded in a collinear manner by a rack structure (23) to form a sliding bar unit, said two sliding rails (21) are respectively connected with two ends of the sliding bar unit in a sliding manner, the sliding rails (21) are installed on the base module (1), and the two pneumatic tourniquet modules (3) are installed on the same side of the sliding bar unit and respectively installed on one sliding bar (22).

7. A vein compression device for venipuncture according to claim 6 wherein each slide rail (21) is provided with a motor (24), the motor (24) being adapted to connect the slide (22) to which the slide rail (21) is connected.

8. A venous compression device for venipuncture as claimed in claim 1 wherein the moving module (2) comprises a track and a sliding block connected to each other, the locking mechanism (31) connecting the sliding block so that the pneumatic tourniquet module (3) can slide along the track.

9. A venous compression device for venipuncture according to claim 1 further comprising an infrared image recognition means (4) mounted above the pneumatic tourniquet module (3).

10. A venous compression device for venipuncture according to claim 1 wherein the base module (1) comprises an arm support (11) and a base plate (12), the arm support (11) is located on both sides of the base plate (12), both ends of the moving module (2) are fixed on the side of the arm support (11), and the pneumatic tourniquet module (3) is suspended between the two arm supports (11).