CN221976530U - Anti-collision sampling needle, sampling mechanism and sample analyzer - Google Patents

Abstract

The application discloses an anti-collision sampling needle, which comprises: the needle comprises a needle body (1), a mounting block (2) and a needle clamping block (3), wherein the mounting block (2) is provided with a through hole (21) for the needle body (1) to pass through; the needle clamping block (3) is fixedly connected with the needle body (1); the needle clamping block (3) is in sliding fit with the mounting block (2), and an elastic piece (4) is arranged between the needle clamping block (3) and the mounting block (2) along the sliding direction. The application also provides a sampling mechanism and a sample analyzer using the anti-collision sampling needle. According to the anti-collision sampling needle provided by the application, the needle tip can be prevented from being damaged by utilizing the movable connection between the needle clamping block and the mounting block and the arrangement of the elastic piece.

Description

Anti-collision sampling needle, sampling mechanism and sample analyzer

Technical Field

The present application relates to the technical field of detection equipment, and in particular to an anti-collision sampling needle, a sampling mechanism and a sample analyzer.

Background Art

Microscopic examination of blood smears is a basic method of blood cytology examination, especially for the diagnosis of various blood diseases. It is widely used in clinical testing.

The blood sample sent for inspection is sealed and stored in a blood collection tube. The analysis instrument needs to use a sampling needle to pierce the sealing rubber stopper of the blood collection tube, reach into the tube to absorb the blood sample, and then smear it on a glass slide to form a blood smear, which is then examined under a microscope.

During operation, the sampling needle needs to be repeatedly raised and lowered, which is usually achieved by a motor and a transmission structure. If an obstacle is encountered during the descent, the tip of the sampling needle is easily damaged.

Utility Model Content

In order to solve the above technical problems, the first purpose of the utility model is to provide an anti-collision sampling needle; the second purpose of the utility model is to provide a sampling mechanism; the third purpose of the utility model is to provide a sample analyzer; the anti-collision sampling needle provided in this application utilizes the movable connection between the needle clamping block and the mounting block and the setting of the elastic part to prevent the needle tip from being damaged.

The technical solution provided by the utility model is as follows:

An anti-collision sampling needle comprises: a needle body, a mounting block and a needle clamping block.

The mounting block is provided with a through hole for the needle body to pass through;

The needle clamping block is fixedly connected to the needle body;

The needle clamping block is slidably matched with the mounting block, and an elastic piece is arranged between the needle clamping block and the mounting block along the sliding direction.

Preferably, the needle clamping block is provided with a sliding plate,

The mounting block is provided with a sliding groove matched with the sliding plate.

Preferably, a limiting protrusion is provided above the sliding plate, and a fixing portion for fixing the needle body is provided below the sliding plate, and the sliding groove is located between the limiting protrusion and the fixing portion.

Preferably, the elastic member is arranged between the bottom of the mounting block and the top of the fixing portion.

Preferably, the elastic member is a spring, and the spring is wound around the circumference of the needle body.

A sampling mechanism comprises a lifting drive mechanism and a sampling needle, wherein the sampling needle is the anti-collision sampling needle described in any one of the above items.

Preferably, the lifting drive mechanism includes a lifting power source, a lifting transmission mechanism, and a slider;

The lifting power source provides power to the lifting transmission mechanism to drive the slider to move up and down; the mounting block is fixedly connected to the slider.

Preferably, a sensor is further provided, the sensor being located at the top end of the slider stroke.

Preferably, the sensor is provided with a recess cooperating with the needle holding block.

A sample analyzer comprises the sampling mechanism described in any one of the above items.

The present application provides an anti-collision sampling needle, including a needle body, a mounting block and a needle clamping block. The needle body passes through a through hole provided in the mounting block and can move freely relative to the mounting block. The needle clamping block is fixedly connected to the needle body, and at the same time, the needle clamping block and the mounting block are slidably matched. Then, relative to the mounting block, the needle clamping block and the needle body can slide as a whole. An elastic member is also provided between the needle clamping block and the mounting block along the sliding direction of the needle clamping block. When the two slide relative to each other, the elastic member can store elastic potential energy. Then, when the needle body encounters an obstacle during its descent, the movable connection (non-rigid connection) between the mounting block and the needle clamping block, as well as the provided elastic member, can be used to convert the downward force transmitted by the mounting block into elastic potential energy storage. During the descent of the mounting block, the needle body will not press against the obstacle and cause damage to the needle tip.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a sampling mechanism provided with an anti-collision sampling needle in an embodiment of the utility model;

FIG2 is a schematic structural diagram of another angle of the sampling mechanism provided with an anti-collision sampling needle in an embodiment of the utility model (the anti-collision sampling needle is disassembled for display);

FIG3 is a partial enlarged schematic diagram of FIG2 ;

FIG4 is a schematic diagram of the structure of a needle clamping block in an anti-collision sampling needle in an embodiment of the present utility model;

5 is a schematic diagram of the structure of the mounting block in the anti-collision sampling needle in an embodiment of the utility model;

FIG6 is a schematic diagram of the structure of a sampling mechanism disposed in a sample analyzer in an embodiment of the present utility model;

FIG7 is a side view schematic diagram of a sampling mechanism disposed in a sample analyzer in an embodiment of the present utility model;

Figure markings: 1-needle body; 2-mounting block; 21-through hole; 22-sliding groove; 3-needle clamping block; 31-sliding plate; 32-limiting protrusion; 33-fixing part; 4-elastic member; 5-lifting drive mechanism; 51-lifting power source; 52-lifting transmission mechanism; 53-slider; 531-auxiliary mounting block; 54-sensor.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

As shown in the figure, the embodiment of the utility model provides an anti-collision sampling needle, comprising: a needle body 1, a mounting block 2 and a needle clamping block 3,

The mounting block 2 is provided with a through hole 21 for the needle body 1 to pass through;

The needle clamping block 3 is fixedly connected to the needle body 1;

The needle clamping block 3 is slidably matched with the mounting block 2, and an elastic member 4 is provided between the needle clamping block 3 and the mounting block 2 along the sliding direction.

The present application provides an anti-collision sampling needle, including a needle body 1, a mounting block 2 and a needle clamping block 3. The needle body 1 passes through a through hole 21 provided in the mounting block 2 and can move freely relative to the mounting block 2; the needle clamping block 3 is fixedly connected to the needle body 1, and at the same time, the needle clamping block 3 and the mounting block 2 are slidably matched, so that relative to the mounting block 2, the needle clamping block 3 and the needle body 1 can slide as a whole; an elastic member 4 is also provided between the needle clamping block 3 and the mounting block 2 along the sliding direction of the needle clamping block 3. When the two slide relative to each other, the elastic member 4 can store elastic potential energy. When the needle body 1 encounters an obstacle during the descent process, the movable connection (non-rigid connection) between the mounting block 2 and the needle clamping block 3, as well as the provided elastic member 4, can be used to convert the downward force transmitted from the mounting block 2 into elastic potential energy storage. During the descent of the mounting block 2, the needle body 1 will not press against the obstacle and cause damage to the needle tip.

Specifically, during normal operation, the mounting block 2 descends and rises, driving the needle clamping block 3 and the needle body 1 to descend and rise synchronously. When the needle body 1 stops moving when it contacts an obstacle during the descent process, the driving force that causes the mounting block 2 to descend at this time is opposite to the obstruction force of the obstacle, squeezing the elastic member 4 to cause it to undergo elastic deformation. Then, during the further descent of the mounting block 2, the needle body 1 can maintain its vertical height unchanged and will not be further pressed against the obstacle, thereby realizing the anti-collision protection function for the needle body 1.

When the anti-collision sampling needle is used in a machine, a pressure sensor can be provided, or a distance sensor can be provided between the mounting block 2 and the needle clamping block 3, so that the needle body 1 can be promptly detected to be blocked, and the power can be stopped or switched to avoid damage to the equipment caused by the rigid collision of the needle body 1. It can also prompt an error or sound an alarm to remind the operator to remove the obstacle in time.

Preferably, the needle clamping block 3 is provided with a sliding plate 31.

The mounting block 2 is provided with a sliding groove 22 which matches with the sliding plate 31 .

Preferably, the needle clamping block 3 and the mounting block 2 are slidably matched, which is achieved by providing a sliding plate 31 on the needle clamping block 3 and providing a matching sliding groove 22 on the mounting block 2. The sliding plate 31 extends into the sliding groove 22 and slides.

More preferably, the sliding groove 22 has a certain thickness and also has a guiding function for the sliding plate 31 , without the need to additionally provide a guide rail.

Preferably, a limiting protrusion 32 is provided above the sliding plate 31 , and a fixing portion 33 for fixing the needle body 1 is provided below the sliding plate 31 , and the sliding groove 22 is located between the limiting protrusion 32 and the fixing portion 33 .

Preferably, a limiting protrusion 32 is provided above the sliding plate 31, and a fixing portion 33 for fixing the needle body 1 is provided below the sliding plate 31, and the sliding groove 22 is located between the limiting protrusion 32 and the fixing portion 33, then the upper and lower sliding limits of the sliding plate 31 relative to the sliding groove 22 are respectively limited by the limiting protrusion 32 and the fixing portion 33, so as to prevent the sliding plate 31 from slipping out of the sliding groove 22, thereby causing the needle clamping block 3 and the mounting block 2 to separate.

The fixing portion 33 may be provided with a U-shaped clamping groove, and then the needle body 1 is clamped into the clamping groove and then locked by bolts to achieve the fixation of the needle body 1.

Preferably, the elastic member 4 is disposed between the bottom of the mounting block 2 and the top of the fixing portion 33 .

Preferably, the elastic member 4 is a spring, and the spring is wound around the outer circumference of the needle body 1 .

The elastic member 4 can be arranged at a position where the mounting block 2 and the needle clamping block 3 slide against each other to store elastic potential energy when encountering resistance. Preferably, the elastic member 4 is arranged between the bottom of the mounting block 2 and the top of the fixing portion 33 .

More preferably, the elastic member 4 is a spring, and the spring is wound around the outer circumference of the needle body 1, which is convenient for installation and removal of the spring, and can provide a more uniform elastic force relative to the needle when it is sleeved on the needle.

A sampling mechanism comprises a lifting drive mechanism 5 and a sampling needle, wherein the sampling needle is the anti-collision sampling needle described in any one of the above items.

The present application also provides a sampling mechanism, including a lifting drive mechanism 5 and a sampling needle, and the sampling needle adopts any of the anti-collision sampling needles described above, and utilizes its anti-collision ability to improve the durability of the sampling mechanism.

When the sampling mechanism uses a sleeved inner needle and outer needle, the inner needle can be set as the above-mentioned anti-collision sampling needle, the outer needle can be set as the above-mentioned anti-collision sampling needle, or the inner needle and the outer needle can be set as the above-mentioned anti-collision sampling needle at the same time.

Preferably, the lifting drive mechanism 5 includes a lifting power source 51, a lifting transmission mechanism 52, and a slider 53;

The lifting power source 51 provides power to the lifting transmission mechanism 52 to drive the slider 53 to move up and down; the mounting block 2 is fixedly connected to the slider 53.

Preferably, the lifting drive mechanism 5 includes a lifting power source 51, a lifting transmission mechanism 52, and a slider 53; the lifting power source 51 provides power to the lifting transmission mechanism 52 to drive the slider 53 to move up and down; the mounting block 2 is fixedly connected to the slider 53. During operation, the driving force of the lifting power source 51 drives the lifting transmission mechanism 52 to rotate, thereby driving the slider 53 to move up and down, and the mounting block 2 is fixedly connected to the slider 53 and moves synchronously with the slider 53.

Specifically, the slider 53 may also be provided with an auxiliary mounting block 531, and the mounting block 2 is connected to the auxiliary mounting block 531 by a connection structure known in the art such as screws. In the present application, the scope referred to by the slider includes not only itself, but also other mounting blocks connected thereto, as long as they provide installation and can slide, they can be the slider in this article.

Specifically, the lifting transmission mechanism 52 can be driven by a gear slider or a belt. Preferably, the lifting transmission mechanism 52 is a structure of a transmission belt, a driving wheel, and a driven wheel. The lifting power source 51 drives the driving wheel to rotate, so that the transmission belt rotates, and the slider 53 is clamped on the transmission belt and moves accordingly. In addition, when using a transmission belt, a guide rail can be provided to guide the movement of the slider 53. The lifting power source 51 is preferably a motor.

Preferably, a sensor 54 is further provided, and the sensor 54 is located at the top end of the travel of the slider 53 .

More preferably, the sensor 54 is located at the top of the travel of the slider 53. This arrangement places the anti-collision sampling needle at this position which can be used as the initial position for starting, facilitating the resetting of the anti-collision sampling needle.

Preferably, the sensor 54 is provided with a recess that matches with the needle clamping block 3 .

More preferably, the sensor 54 is provided with a depression matched with the needle clamping block 3, and determines whether the anti-collision sampling needle reaches the top by sensing whether the needle clamping block 3 is located in the depression.

For example, a photoelectric sensor may be provided to determine whether the needle clamping block 3 is in place by sensing whether the sliding plate 31 of the needle clamping block 3 blocks light.

A sample analyzer comprises the sampling mechanism described in any one of the above items.

The present application also provides a sample analyzer, comprising any of the sampling mechanisms described above.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A collision-proof sampling needle, characterized in that it comprises: a needle body (1), a mounting block (2) and a needle clamping block (3), The mounting block (2) is provided with a through hole (21) for the needle body (1) to pass through; The needle clamping block (3) is fixedly connected to the needle body (1); The needle clamping block (3) and the mounting block (2) are slidably matched, and an elastic member (4) is provided between the needle clamping block (3) and the mounting block (2) along the sliding direction. 2. The anti-collision sampling needle according to claim 1, characterized in that: The needle clamping block (3) is provided with a sliding plate (31). The mounting block (2) is provided with a sliding groove (22) that matches the sliding plate (31). 3. The anti-collision sampling needle according to claim 2 is characterized in that a limiting protrusion (32) is provided above the sliding plate (31), and a fixing part (33) for fixing the needle body (1) is provided below, and the sliding groove (22) is located between the limiting protrusion (32) and the fixing part (33). 4. The anti-collision sampling needle according to claim 3 is characterized in that the elastic member (4) is arranged between the bottom of the mounting block (2) and the top of the fixing portion (33). 5. The anti-collision sampling needle according to claim 4 is characterized in that the elastic member (4) is specifically a spring, and the spring is wound around the outer circumference of the needle body (1). 6. A sampling mechanism, comprising a lifting drive mechanism (5) and a sampling needle, characterized in that the sampling needle is the anti-collision sampling needle according to any one of claims 1 to 5. 7. The sampling mechanism according to claim 6, characterized in that the lifting drive mechanism (5) comprises a lifting power source (51), a lifting transmission mechanism (52), and a slider (53); The lifting power source (51) provides power to the lifting transmission mechanism (52), driving the slider (53) to move up and down; the mounting block (2) is fixedly connected to the slider (53). 8. The sampling mechanism according to claim 7, characterized in that a sensor (54) is also provided, wherein the sensor (54) is located at the top end of the travel of the slider (53). 9. The sampling mechanism according to claim 8, characterized in that the sensor (54) is provided with a recess that matches with the needle clamping block (3). 10. A sample analyzer, characterized by comprising the sampling mechanism according to any one of claims 6 to 9.