CN201697853U

CN201697853U - Sample injection needle impact protection device for blood viscosity tester

Info

Publication number: CN201697853U
Application number: CN2010202208961U
Authority: CN
Inventors: 蔡泳
Original assignee: CHONGQING NANFANG NUMERICAL CONTROL EQUIPMENT Co Ltd
Current assignee: CHONGQING NANFANG NUMERICAL CONTROL EQUIPMENT Co Ltd
Priority date: 2010-06-09
Filing date: 2010-06-09
Publication date: 2011-01-05
Anticipated expiration: 2020-06-09

Abstract

The utility model discloses a sample injection needle impact protection device for blood viscosity tester, which comprises a sample injection arm, a photoelectric base fixed on the sample injection arm and a main body fixed at the end of the sample injection arm. The main body has a hollow cavity structure, a sample injection needle locker is arranged inside the hollow cavity of the main body, the lower end of the sample injection needle locker protrudes out of the bottom part of the main body, a regulating plate is fixedly sheathed at the upper part of the hollow cavity of the main body, a through hole is arranged at the center of the regulating plate, and a compression spring is arranged between the lower end surface of the regulating plate and the upper end surface of the sample injection needle locker; and an axial groove is arranged on the side wall of the main body close to the sample injection arm, and a light screening plate is fixed on the sample injection needle locker and has one end thereof extending out of the axial groove into the photosensitizing port of the photoelectric base. Compared with the structure in the prior art, the sample injection needle impact protection device has simpler and more reliable structure. The device has adjustable sensitivity through the regulating plate, can well avoid damage of the sample injection needle, and has long service life.

Description

Blood viscosity detector sample introduction needle impact protector device

Technical field:

The utility model relates to a kind of Medical Instruments, particularly relates to a kind of blood viscosity detector sample introduction needle impact protector device.

Technical background:

At medical domain; when measuring blood viscosity in the application of sample process sample introduction needle in the sample of test tube, draw blood sample; make sample introduction needle flexural deformation or damage test tube cause the accident owing to sample introduction needle moves downward when running into accident in the process because resistance is crossed conference, the protection when therefore sample introduction needle being clashed into is stable particularly important with reliability to checkout equipment.

Existing to the guard method of blood viscosity detector sample introduction needle almost seldom have a spot of employing on biochemical instruments, because its complex structure; what adopt is that the mechanical contact-type switch detects; exist the reaction time slow, contact endurance is limited, to shortcoming such as the high difficulty of processing of structural requirement of sample introduction needle is big.

The utility model content:

Technical problem to be solved in the utility model is to provide a kind of simple in structure, good reliability, highly sensitive blood viscosity detector sample introduction needle impact protector device.

For achieving the above object, the technical solution of the utility model is: the blood viscosity detector sample introduction needle impact protector device of design, its main points are: comprise the sample introduction arm, the main body that is fixed on the photoelectricity seat on this sample introduction arm and is fixed on sample introduction arm end, described main body is a cavity structure, in the cavity of this main body, be placed with sample introduction needle purl device, the bottom of described main body is stretched out in described sample introduction needle purl device lower end, described body cavity top is installed with adjustable plate, be provided with through hole in these adjustable plate central authorities, between the upper surface of the lower surface of described adjustable plate and sample introduction needle purl device, be provided with compression spring; Having axial groove near on the main body wall of described sample introduction arm, on described sample introduction needle purl device, be fixed with anti-dazzling screen, this anti-dazzling screen one end stretches out described axial groove, and this anti-dazzling screen external part stretches into the sensitization mouth of described photoelectricity seat.

The utility model is very traditional blood viscosity detector sample introduction needle to be collided when the specimen easily and to cause damage, thereby Creative Design.The utility model is that the resistance that is subjected to when drawing blood sample by sample introduction needle is normally mobile is little, compression spring is pressed in the bottom of main body with sample introduction needle purl device, thereby the anti-dazzling screen that links to each other with sample introduction needle purl device blocks the output of control circuit no signal with the light of photoelectricity seat; The sample introduction needle motion is obstructed when sample introduction needle is subjected to accidental impact; external force moves upward sample introduction needle; sample introduction needle purl device rises; thereby make the anti-dazzling screen that links to each other with sample introduction needle purl device move up; thereby open the photoelectricity seat, thereby the photoelectricity seat will receive signal and by control circuit sample introduction needle be moved upward rapidly to have protected sample introduction needle this moment.The bottom that compression spring can be pressed in sample introduction needle purl device main body being set in the above structure, avoiding rocking of sample introduction needle etc., is in order to give stroke of anti-dazzling screen and axial groove is set.

For the ease of regulating the strength of compression spring, described main body is a column construction, and this main body is threaded with described adjustable plate.

For sample introduction needle purl device is fixed on bottom part body reliably, guarantee when placing sample introduction needle that simultaneously sample introduction needle is vertical, described sample introduction needle purl device is the little down big ledge structure of, and this sample introduction needle purl device lower end is a back taper, have the sample introduction needle clamping hole vertically in described sample introduction needle purl device central authorities, the through hole on this sample introduction needle clamping hole and the adjustable plate over against.

In described main body, be equipped with sample introduction needle, this sample introduction needle is passed described sample introduction needle purl device and is stretched into the sample introduction test tube that is arranged in sample introduction needle purl device below, described compression spring is sleeved on the described sample introduction needle, and being against described adjustable plate lower surface on this compression spring, the compression spring lower end is against the upper surface of described sample introduction needle purl device.

Effect of the present utility model:

1, compare traditional simple and reliable for structurely, sensitivity of the present utility model can be regulated by adjustable plate.

2, adopt photo-electric detection reaction speed faster than mechanical type, well avoid the damage of sample introduction needle, the life-span is long.

3, adopt fixedly sample introduction needle of sample introduction needle purl device, it is easy to use flexibly to adapt to dissimilar sample introduction needle.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the vertical view of Fig. 1.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described.

See also Fig. 1 and Fig. 2: shown in blood viscosity detector sample introduction needle impact protector device, the main body 2 that comprises sample introduction arm 1, is fixed on the photoelectricity seat 2 on this sample introduction arm 1 and is fixed on sample introduction arm 1 end, described main body 2 is a cavity structure, in the cavity of this main body 2, be placed with sample introduction needle purl device 3, the bottom of described main body 2 is stretched out in described sample introduction needle purl device 3 lower ends, described main body 2 cavity tops are installed with adjustable plate 4, be provided with through hole 4a in these adjustable plate 4 central authorities, between the upper surface of the lower surface of described adjustable plate 4 and sample introduction needle purl device 3, be provided with compression spring 5; In described main body 2, be equipped with sample introduction needle 8, this sample introduction needle 8 is passed described sample introduction needle purl device 3 and is stretched into the sample introduction test tube 9 that is arranged in sample introduction needle purl device 3 belows, described compression spring 5 is sleeved on the described sample introduction needle 8, and these compression spring 5 upper ends are against described adjustable plate 4 lower surfaces, and compression spring 5 lower ends are against the upper surface of described sample introduction needle purl device 3; Having axial groove 2a near on main body 2 sidewalls of described sample introduction arm 1, on described sample introduction needle purl device 3, be fixed with anti-dazzling screen 6, these anti-dazzling screen 6 one ends stretch out described axial groove 2a, and these anti-dazzling screen 6 external parts stretch into the sensitization mouth of described photoelectricity seat 2.

It can also be seen that in conjunction with Fig. 1 and Fig. 2: described main body 2 is column construction, and this main body 2 is threaded with described adjustable plate 4; Described sample introduction needle purl device 3 big ledge structure for little down, and these sample introduction needle purl device 3 lower ends are back taper, has the sample introduction needle clamping hole vertically in described sample introduction needle purl device 3 central authorities, the through hole 4a on this sample introduction needle clamping hole and the adjustable plate 4 over against.

The above only is preferred embodiment of the present utility model; it is not restriction with the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. blood viscosity detector sample introduction needle impact protector device, it is characterized in that: comprise sample introduction arm (1), the main body (2) that is fixed on the photoelectricity seat (2) on this sample introduction arm (1) and is fixed on sample introduction arm (1) end, described main body (2) is a cavity structure, in the cavity of this main body (2), be placed with sample introduction needle purl device (3), the bottom of described main body (2) is stretched out in described sample introduction needle purl device (3) lower end, described main body (2) cavity top is installed with adjustable plate (4), central authorities are provided with through hole (4a) at this adjustable plate (4), are provided with compression spring (5) between the upper surface of the lower surface of described adjustable plate (4) and sample introduction needle purl device (3); Having axial groove (2a) near on main body (2) sidewall of described sample introduction arm (1), on described sample introduction needle purl device (3), be fixed with anti-dazzling screen (6), these anti-dazzling screen (6) one ends stretch out described axial groove (2a), and this anti-dazzling screen (6) external part stretches into the sensitization mouth of described photoelectricity seat (2).

2. blood viscosity detector sample introduction needle impact protector device according to claim 1 is characterized in that: described main body (2) is a column construction, and this main body (2) is threaded with described adjustable plate (4).

3. blood viscosity detector sample introduction needle impact protector device according to claim 1; it is characterized in that: described sample introduction needle purl device (3) is the little down big ledge structure of; and this sample introduction needle purl device (3) lower end is a back taper; central authorities have the sample introduction needle clamping hole vertically at described sample introduction needle purl device (3), the through hole (4a) on this sample introduction needle clamping hole and the adjustable plate (4) over against.

4. blood viscosity detector sample introduction needle impact protector device according to claim 1; it is characterized in that: in described main body (2), be equipped with sample introduction needle (8); this sample introduction needle (8) is passed described sample introduction needle purl device (3) and is stretched into the sample introduction test tube (9) that is arranged in sample introduction needle purl device (3) below; described compression spring (5) is sleeved on the described sample introduction needle (8); and being against described adjustable plate (4) lower surface on this compression spring (5), compression spring (5) lower end is against the upper surface of described sample introduction needle purl device (3).