CN215458035U

CN215458035U - Blood sampler

Info

Publication number: CN215458035U
Application number: CN202122019646.2U
Authority: CN
Inventors: 张立波; 崔成哲
Original assignee: Tianjin Huahong Technology Co Ltd
Current assignee: Tianjin Huahong Technology Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-11
Anticipated expiration: 2031-08-25

Abstract

The embodiment of the utility model relates to a hemostix, and by applying the hemostix provided by the embodiment of the utility model, a second guide part slides along a first guide part by pressing an operation part, and drives a pressing plate to be separated from a cutter holder, and the cutter holder pivots to drive a blade to be exposed out of a shell through a first opening; therefore, in the scheme, the user presses the operation part to trigger the blood sampling action, and the pressing operation is simpler than the rotating operation, so that the user operation is simplified.

Description

Blood sampler

Technical Field

The utility model relates to the field of medical instruments, in particular to a hemostix.

Background

Neonatal heel blood screening refers to examination of the heel blood collected 72 hours after birth of the infant. Mainly aims at diseases which have high morbidity, no obvious symptoms in the early stage and laboratory positive indexes, can be diagnosed and can be treated. At present, blood sampling for the heel of a newborn is generally realized by two types of blood sampling devices: one type of hemostix is a common peripheral hemostix, and the hemostix realizes blood collection by a needle puncture mode and is mainly applied to finger abdomen blood collection; another type of blood collection device is a heel blood collector specially designed for collecting blood from the heel, which collects blood by cutting with a blade. Compared with the existing common peripheral hemostix, the heel hemostix has the advantages of large bleeding amount and light pain, thus having good application prospect in the aspect of neonatal heel blood sampling.

The existing heel blood sampling device generally triggers the blood sampling action by rotating a key by a user. When the blood sampler is used, a user needs to operate both hands together, or the blood sampler needs to be fixed in advance to realize one-hand operation, so that the operation of the user is complicated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide a blood sampler, so as to simplify the operation of a user.

In order to achieve the above object, an embodiment of the present invention provides a blood collection device, including:

the device comprises a shell, a first guide part and a second guide part, wherein a containing cavity is formed in the shell, the shell is provided with a first opening and a second opening, and the containing cavity is internally provided with the first guide part;

a tool holder pivotally disposed within the receiving cavity, the tool holder having a blade disposed thereon, the blade adapted to be exposed to the exterior of the housing via the first opening when the tool holder is pivoted;

an elastic member disposed in the accommodation cavity, one end of which is connected to the housing and the other end of which is connected to the holder, to provide elastic force for pivoting the holder;

a trigger assembly including an operating portion extending from the second opening out of the housing, a second guide portion, and a pressure plate adapted to block the tool holder from pivoting;

based on the pressing of the operation part, the second guide part is suitable for sliding along the first guide part and drives the pressing plate to be separated from the cutter holder, and the cutter holder pivots and drives the blade to be exposed out of the shell through the first opening.

Optionally, the housing further includes a first mating portion, and the trigger assembly further includes a second mating portion, and the first mating portion is adapted to mate with the second mating portion to cause an obstacle to the sliding of the second guide portion, so that the second guide portion slides along the first guide portion when the pressing of the operating portion exceeds a preset force.

Optionally, the first matching portion is a protrusion, the second matching portion is a connecting sleeve, and the connecting sleeve is suitable for being sleeved with the protrusion and separated from the protrusion when the pressing force on the operation portion exceeds a preset force.

Optionally, the first matching portion is a columnar protrusion, the second matching portion is a connecting sleeve with a notch, and the second matching portion is separated from the columnar protrusion through the notch under the condition that the pressing force of the operation portion exceeds the preset force.

Optionally, the diameter of the columnar protrusion is larger than that of the connecting sleeve.

Optionally, the second matching portion is disposed between the second guiding portion and the pressing plate.

Optionally, a third guide portion is further disposed in the accommodating cavity, the third guide portion is parallel to the first guide portion, and a space suitable for the operating portion to slide is formed between the third guide portion and the first guide portion;

based on the pressing of the operation part, the operation part slides in the space to drive the second guide part to slide along the first guide part.

Optionally, the first guide portion includes a first guide rib, the third guide portion includes a second guide rib, the first guide rib and the second guide rib are arranged in parallel, and a space suitable for the sliding of the operation portion is formed between the first guide rib and the second guide rib;

the second guide portion comprises a first sliding portion and an abutting portion, the first sliding portion and the abutting portion are in sliding contact with different surfaces of the first guide rib respectively, and the abutting portion is suitable for limiting the relative position of the second guide portion and the first guide rib in the preset direction.

Optionally, the housing further includes a first limiting portion, the operating portion includes a second limiting portion, and the first limiting portion and the second limiting portion are matched to limit a moving range of the operating portion.

Optionally, the operating portion further includes a second sliding portion, the second sliding portion is parallel to the second guiding portion, and the second sliding portion is adapted to slide along the second guiding rib; the second limiting part is connected with the second sliding part.

Optionally, the operating portion further includes a third sliding portion, the third sliding portion is parallel to the second guiding portion, the third sliding portion is adapted to slide along the first guiding rib, and the third sliding portion and the second guiding portion are in sliding contact with different surfaces of the first guiding rib respectively.

By applying the embodiment of the utility model, the second guide part slides along the first guide part by pressing the operation part, and drives the pressing plate to be separated from the cutter holder, and the cutter holder pivots to drive the blade to be exposed out of the shell through the first opening; therefore, in the scheme, the user presses the operation part to trigger the blood sampling action, and the pressing operation is simpler than the rotating operation, so that the user operation is simplified.

Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the utility model.

Drawings

FIG. 1 is a schematic diagram of a trigger assembly according to an exemplary embodiment of the present invention;

FIG. 2a is a schematic view of the internal structure of a housing according to an exemplary embodiment of the present invention;

FIG. 2b is a schematic exterior view of a housing according to an exemplary embodiment of the present invention;

FIG. 3 is an internal schematic view of a pre-use state of the lancing device according to an exemplary embodiment of the present invention;

fig. 4 is an internal schematic view of a used state of the blood sampler according to an exemplary embodiment of the present invention.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the utility model with reference to the drawings is intended to illustrate the general inventive concept and should not be taken as limiting the utility model.

A blood collection device provided by an embodiment of the present invention is described below with reference to fig. 1 to 4, and includes:

a housing 20, as shown in fig. 2 a-2B, having a receiving cavity formed therein, the housing having a first opening 20A and a second opening 20B, the receiving cavity having a first guide 22 disposed therein;

a holder 30, as shown in fig. 3 and 4, pivotably disposed within the receiving cavity, the holder 30 having a blade 32 disposed thereon, the blade 32 being adapted to be exposed out of the housing 20 via the first opening 20A when the holder 30 is pivoted;

an elastic member 40, as shown in fig. 3 and 4, disposed in the receiving cavity, having one end connected to the housing 20 and the other end connected to the holder 30, to provide elastic force for pivoting the holder 30;

the trigger assembly 10, as shown in fig. 1, includes an operating portion 11, a second guiding portion 12 and a pressing plate 14, as shown in fig. 3 and 4, the operating portion 11 extends from the second opening 20B to the outside of the housing 20, as shown in fig. 3, the pressing plate 14 is adapted to block the tool holder 30 from pivoting;

as shown in fig. 4, upon pressing of the operating portion 11, the second guiding portion 12 is adapted to slide along the first guiding portion 22 and bring the pressing plate 14 away from the tool holder 30, and the tool holder 30 pivots to bring the blade 32 out of the housing 20 through the first opening 20A.

In FIG. 1, the end of the pressure plate 14 is stepped to further help block the pivot of the tool holder 30. this shape is merely illustrative and is not intended to limit the specific shape of the pressure plate 14.

For example, the operation portion 11 extends from the second opening 20B to the outside of the housing 20, which facilitates the user's operation. The first guide portion 22 may be located in the receiving cavity of the housing 20 at a position corresponding to the second opening 20B, which facilitates the engagement between the trigger assembly 10 and the first guide portion 22.

In an exemplary embodiment of the present invention, as shown in fig. 2a, the housing 20 further comprises a first matching portion 23, as shown in fig. 1, the trigger assembly 10 further comprises a second matching portion 13, the first matching portion 23 is adapted to match with the second matching portion 13 to obstruct the sliding of the second guiding portion 12, so that the second guiding portion 12 slides along the first guiding portion 22 in case that the pressing of the operating portion 11 exceeds a preset force.

In the present exemplary embodiment, the blood sampling device can trigger the blood sampling operation (or the knife-out operation) only when the user strongly presses the operation portion 11. Thus, the situation that the user accidentally touches the operation part to cause false triggering can be reduced, and the use safety of the blood collector is improved.

In an exemplary embodiment of the utility model, the first engaging portion is a protrusion, the second engaging portion is a connecting sleeve, and the connecting sleeve is adapted to be sleeved with the protrusion and to be separated from the protrusion when the pressing force on the operating portion exceeds a predetermined force.

Alternatively, in other embodiments not shown in the present invention, the first mating portion and the second mating portion may be two portions that are clamped together, for example, one is a clamping groove, and the other is a clamping member. The embodiment of the present invention does not limit the specific structures of the first engaging portion and the second engaging portion, and the first engaging portion and the second engaging portion may function as resistance to the sliding of the second guide portion.

In an exemplary embodiment of the present invention, as shown in fig. 2a, the first engaging portion 23 is a columnar protrusion, as shown in fig. 1, the second engaging portion 13 is a connecting sleeve with a notch, and when the pressing force on the operating portion 11 exceeds a predetermined force, the second engaging portion 13 is disengaged from the columnar protrusion through the notch.

For example, the pillar-shaped protrusion can be a positioning pillar of the blood collector.

In an exemplary embodiment of the utility model, the diameter of the stud projection is larger than the diameter of the coupling sleeve.

231 shown in fig. 2a can be understood as the base of the first fitting part 23, which base has a larger diameter than the diameter of the stud-shaped projection, which base bears the stud-shaped projection so that it does not come into direct contact with the housing wall, so that it can serve as a protection for the housing wall. In this embodiment, the diameter of the stud bump is compared to the diameter of the adapter sleeve, regardless of the diameter of the seat 231. As shown in fig. 1 to 4, the diameter of the inner arc surface 131 of the connecting sleeve 13 is slightly smaller than that of the columnar protrusion 23; under the condition that the blood sampling action is not triggered, the inner arc surface 131 of the connecting sleeve 13 is sleeved with the columnar bulge 23; when the operating part 11 is pressed, the blood sampling action is triggered, and the inclined surface 132 of the connecting sleeve 13 is separated from the notch of the columnar bulge 23; the diameter of the inner arc surface 131 is slightly smaller than that of the columnar protrusion 23, so that a certain force is required for disengaging the columnar protrusion, and the function of preventing accidental triggering is achieved.

For example, the diameter of the connection sleeve may be slightly smaller than that of the columnar protrusion, for example, the connection sleeve and the columnar protrusion may be in a tight fit or an interference fit, so that a certain force is required to separate the connection sleeve from the columnar protrusion, thereby preventing accidental triggering. In addition, if the user pulls the operation part in the reverse direction, the intention makes used hemostix recover back to the unused state, because the diameter of connecting sleeve is less than the diameter of columnar bulge, connecting sleeve and columnar bulge usually can not recover back to the position of cup jointing mutually, so just blockked the hemostix and reset, solved the problem that bad user used disposable hemostix repeatedly.

In an exemplary embodiment of the present invention, as shown in fig. 1, the second fitting portion 13 is provided between the second guide portion 12 and the pressure plate 14.

In this embodiment, the second guiding portion 12 and the pressing plate 14 are respectively connected to the second matching portion 13, or the second matching portion 13 is disposed at a position where the second guiding portion 12 and the pressing plate 14 are connected to each other. In this way, the trigger assembly 10 includes the operating portion 11, the second guide portion 12, the second mating portion 13 and the pressing plate 14, which are connected in sequence, and is compact and simple in structure.

The specific position of the second matching part in the trigger assembly is not limited in the embodiments of the present invention, for example, in other embodiments of the present invention, which are not shown, the second matching part may also be disposed between the operating part 11 and the second guiding part 12.

In an exemplary embodiment of the present invention, as shown in fig. 2a, a third guiding portion 21 is further disposed in the accommodating cavity of the housing 20, the third guiding portion 21 is parallel to the first guiding portion 22, and a space suitable for the sliding of the operating portion 11 is formed between the third guiding portion 21 and the first guiding portion 22;

based on the pressing of the operation portion 11, the operation portion 11 slides in the space to bring the second guide portion 12 to slide along the first guide portion 22.

The operation part 11 shown in fig. 1 includes a structure similar to a partial rectangular frame, and fig. 1 shows a pressure receiving face 111 in the operation part 11, and a user can press the pressure receiving face 111 so that the operation part 11 slides between the third guide part 21 and the first guide part 22, a second sliding part 112 perpendicular to the pressure receiving face 111 slides along a face 211 of the third guide part 21, and a third sliding part 114 perpendicular to the pressure receiving face 111 slides along the first guide part 22.

In this embodiment, the sliding of the operation portion is controlled by the parallel first guide portion and the third guide portion, so that the sliding stability of the operation portion is stronger, and the operation reliability of the blood sampler is better.

In an exemplary embodiment of the present invention, as shown in fig. 2a, the first guide portion includes a first guide rib 22, the third guide portion includes a second guide rib 21, the first guide rib 22 is disposed in parallel with the second guide rib 21, and a space suitable for the sliding of the operation portion 11 is formed between the first guide rib 22 and the second guide rib 21;

as shown in fig. 1, the second guide portion 12 includes a first sliding portion 121 and an abutting portion 122, the first sliding portion 121 and the abutting portion 122 are respectively in sliding contact with different surfaces of the first guide rib 22, and the abutting portion 122 is adapted to define a relative position of the second guide portion 12 and the first guide rib 22 in a preset direction.

The first sliding portion 121 may be understood as a plane indicated by reference numeral 121 in fig. 1, and the abutting portion 122 may be understood as a projection indicated by reference numeral 122 in fig. 1, which may include three faces, an upper bottom face, a side face, and a lower bottom face.

Taking fig. 1 and 2a as an example, the first sliding portion 121 is in sliding contact with the side surface of the first guide rib 22, the abutting portion 122 is in sliding contact with the lower bottom surface of the first guide rib 22, and the abutting portion 122 defines the relative position of the second guide portion 12 and the first guide rib 22 in the vertical direction, which may be understood as a direction perpendicular to the sliding direction of the second guide portion 12.

The cross-sectional shape of the second guide part 12 shown in fig. 1 is a cross, and the second guide part 12 includes two sliding parts (the first sliding part 121 and the fourth sliding part 123) and one abutting part 122, which is more structurally stable, but the fourth sliding part 123 may be omitted. The fourth sliding portion 123 may be understood as a plane to which 123 is directed in fig. 1.

In other embodiments of the present invention, which are not shown, the cross-sectional shape of the second guide portion 12 may be

Or is that

The specific sectional shape of the second guide portion 12 is not limited.

This embodiment has introduced the concrete structure of mutually supporting between first guide part, second guide part and the third guide part, adopts this kind of structure, and the condition that operating portion breaks away from preset track is less, and the steadiness of slip process is preferred, and the operation reliability of hemostix is preferred.

In an exemplary embodiment of the present invention, as shown in fig. 2a, the housing 20 further includes a first limiting portion 212, as shown in fig. 1, the operating portion 11 includes a second limiting portion 113, and the first limiting portion 212 and the second limiting portion 113 cooperate to limit a moving range of the operating portion 11.

For example, when the user uses the blood collection device, the user presses the pressure-bearing surface 111, the operation portion 11 drives the second guiding portion 12 to slide along the first guiding portion 22 until the second position-limiting portion 113 of the operation portion 11 contacts the first position-limiting portion 212 of the housing 20, and the operation of the operation portion 11 stops. Thus, the moving range of the operation unit 11 is limited, and other structures in the blood sampling device are not affected.

In an exemplary embodiment of the present invention, as shown in fig. 1, the operation portion further includes a second sliding portion 112, the second sliding portion 112 is parallel to the second guide portion 12, and the second sliding portion 112 is adapted to slide along the second guide rib 21; the second limiting portion 113 is connected to the second sliding portion 112.

In an exemplary embodiment of the present invention, as shown in fig. 1, the operation portion further includes a third sliding portion 114, the third sliding portion 114 is parallel to the second guide portion 12, the third sliding portion 114 is adapted to slide along the first guide rib 22, and the third sliding portion 114 and the second guide portion 12 are in sliding contact with different surfaces of the first guide rib 22, respectively.

Taking fig. 1 and 2a as an example, the second guide portion 12 is in sliding contact with the lower bottom surface and the side surface of the first guide rib 22, and the third sliding portion 114 is in sliding contact with the upper bottom surface of the first guide rib 22. Alternatively, in another embodiment of the present invention, which is not shown, there may be a gap between the third sliding portion 114 and the upper bottom surface of the first guide rib 22 without contact.

When the user presses the pressure-bearing surface 111 to slide the second sliding portion 112 and the third sliding portion 114 of the operating portion 11 and the second guiding portion 12 along the space defined by the second guiding rib 21 and the first guiding rib 22 of the housing 20 until the second limiting portion 113 of the operating portion 11 contacts the first limiting portion 212 of the housing 20, the operation of the trigger assembly 10 is stopped. The sliding of the second and third sliding

portions

112, 114, and the second guide portion 12 can trigger the blood collection action, i.e., the pressing plate 14 is brought away from the tool holder 30, and the tool holder 30 pivots to bring the blade 32 out of the housing 20 through the first opening 20A.

In the first aspect, during the sliding process, the second sliding portion 112 and the second guiding rib 21 move relatively in a tangent manner all the time, and the third sliding portion 114 and the second guiding portion 12 and the first guiding rib 22 move relatively in a tangent manner all the time, so that the pressing force during the sliding process is continuous and uniform, and the user experience is better.

In a second aspect, the blood collecting device according to the embodiment of the present invention has a simple structure and a small number of components, and the blood collecting operation of the entire blood collecting device can be controlled by pressing one operation portion.

In the third aspect, when the operating portion 11 is pressed, the blood sampling operation is triggered, and the inclined surface 132 of the connecting sleeve 13 is disengaged from the notch of the columnar projection 23; the diameter of the inner arc surface 131 is slightly smaller than that of the columnar protrusion 23, so that a certain force is required for disengaging the columnar protrusion, and the function of preventing accidental triggering is achieved.

In the fourth aspect, if the user pulls the operation part reversely, the intention makes the used blood collector recover to the unused state, and the diameter of the connecting sleeve is smaller than that of the columnar bulge, so that the connecting sleeve and the columnar bulge can not recover to the sleeved position normally, the blood collector is prevented from recovering, and the problem that the bad user repeatedly uses the disposable blood collector is solved.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.

Claims

1. A blood sampler, comprising:

2. A lancing device according to claim 1,

the shell further comprises a first matching portion, the trigger assembly further comprises a second matching portion, the first matching portion is suitable for being matched with the second matching portion to cause an obstacle to the sliding of the second guide portion, and the second guide portion slides along the first guide portion when the pressing of the operating portion exceeds a preset force.

3. A lancing device according to claim 2,

the first matching part is a protrusion, the second matching part is a connecting sleeve, and the connecting sleeve is suitable for being sleeved with the protrusion and separated from the protrusion under the condition that the pressing force of the operating part exceeds the preset force.

4. A lancing device according to claim 3,

first cooperation portion is the column arch, second cooperation portion is the connecting sleeve who has the breach, and is right operation portion press the condition that surpasss preset dynamics, second cooperation portion passes through the breach with the column arch breaks away from mutually.

5. A lancing device according to claim 4,

the diameter of the columnar bulge is larger than that of the connecting sleeve.

6. A lancing device according to claim 4,

the second matching part is arranged between the second guide part and the pressing plate.

7. A lancing device according to claim 1,

a third guide part is further arranged in the accommodating cavity, the third guide part is parallel to the first guide part, and a space suitable for the sliding of the operation part is formed between the third guide part and the first guide part;

8. A lancing device according to claim 7,

the first guide part comprises a first guide rib, the third guide part comprises a second guide rib, the first guide rib and the second guide rib are arranged in parallel, and a space suitable for the sliding of the operation part is formed between the first guide rib and the second guide rib;

9. A lancing device according to claim 8,

the shell further comprises a first limiting part, the operating part comprises a second limiting part, and the first limiting part is matched with the second limiting part to limit the moving range of the operating part.

10. A lancing device according to claim 9,

the operating part further comprises a second sliding part which is parallel to the second guide part and is suitable for sliding along the second guide rib; the second limiting part is connected with the second sliding part.

11. A lancing device according to claim 10,

the operating portion further comprises a third sliding portion, the third sliding portion is parallel to the second guide portion, the third sliding portion is suitable for sliding along the first guide rib, and the third sliding portion and the second guide portion are in sliding contact with different surfaces of the first guide rib respectively.