CN215738975U - Finger tip blood sampling device - Google Patents

Abstract

The utility model relates to the technical field of medical instruments, and discloses a finger tip blood sampling device, which comprises: the device comprises a hollow shell, a trigger window and a clamping part, wherein the shell is provided with the trigger window and the clamping part; the needle dial is provided with a blood taking needle and a blood collecting channel; the limiting rebound check ring is arranged between the dial and the shell; the dial clamp is arranged in the shell and can be in adaptive clamping connection with the dial; the elastic piece is arranged between the dial and the dial clamp; when the dial is in adaptive clamping connection with the dial card, the elastic piece is in a compressed state, and the blood taking needle is positioned in the inner cavity of the shell; when the trigger button drives the dial and the dial clamp to be separated from clamping, the elastic piece is in an extending state, and the blood taking needle extends into the clamping part. In the utility model, the finger-end blood sampling device integrates needle extraction and blood sampling, so that blood samples are prevented from being polluted, the detection accuracy is improved, and the requirement on the adaptability of patients is low.

Description

Finger tip blood sampling device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a finger tip blood sampling device.

Background

The tip blood taking needle that present medical institution used in a large number is a disposable simple and easy blood taking needle, the inboard blood sampling position of patient's tip is held between the fingers to left hand forefinger and thumb during the operation, make blood sampling position congestion disinfection back, the blood taking needle is held between the fingers to the right hand, pull out the safety plug of blood taking needle, place the blood sampling position after the disinfection, through pressing down the endotheca with patient's skin direct contact, make the needle core transmission pierce, go out the needle after, there is a small amount of blood to emerge from the eye of a needle, rethread left hand extrusion blood sampling position, collect enough blood to the heparin tube, accomplish the blood sampling process.

Firstly, the traditional finger tip blood taking needle has high requirement on the patient adaptability, the steps are dispersed, and an operator needs to mutually match the left hand and the right hand to implement the whole operation steps; meanwhile, in the blood sampling process, the hand of an operator needs to be fixed, the finger end is extruded, the contact frequency with the blood sampling part is high, and the risk of blood sample pollution is caused; in addition, the traditional blood sampling mode cannot sample independently, and a more convenient sampling mode cannot be provided for people with needs. Some types of lancets also have a problem of exposure of the needle tip after use, which can result in accidental injury to medical personnel.

Therefore, it is necessary to design a device integrating needle withdrawing and blood sampling to solve the problems of the conventional finger tip blood sampling needle that the steps are dispersed, the risk of blood sample contamination is high, and autonomous sampling is impossible.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a finger tip blood sampling device which integrates a needle and blood sampling, so that a blood sample is prevented from being polluted, the detection accuracy is improved, and the requirement on the adaptability of a patient is low.

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

a finger-tip lancing device, comprising:

the trigger button is arranged in the trigger window, and the clamping part is positioned at one end of the shell and communicated with an inner cavity of the shell;

the needle dial is provided with a blood taking needle and a blood collecting channel, the blood taking needle is arranged at one end of the needle dial, the needle dial is arranged in the shell, the blood taking needle is located at one end close to the clamping part, and the blood collecting channel is used for collecting blood;

the limiting rebound retainer ring is arranged between the needle dial and the shell and is used for separating the blood taking needle from a blood taking part;

the dial clamp is arranged in the shell and can be in adaptive clamping connection with the dial;

the elastic piece is arranged between the dial and the dial clamp;

when the dial is in adaptive clamping connection with the dial card, the elastic piece is in a compressed state, and the blood taking needle is positioned in the inner cavity of the shell;

when the trigger button drives the dial and the dial clamp to be separated from clamping, the elastic piece is in an extending state, and the blood taking needle extends into the clamping part.

Preferably, the dial comprises a fixing part, a trigger platform and a spring positioning rod which are connected in sequence, the blood taking needle is arranged at one end of the fixing part far away from the trigger platform, a blood collecting port is arranged inside the fixing part, and the blood collecting channel penetrates through the trigger platform and the spring positioning rod and is communicated with the blood collecting port;

the trigger platform is provided with a boss which is used for being in adaptive clamping connection with the dial;

the trigger platform is provided with a symmetrical and longitudinal slicing positioning plane, and the positioning plane is used for locking the relative positions of the dial and the dial clamp and preventing the dial from rotating.

The elastic piece is sleeved on the spring positioning rod, so that one end of the elastic piece is supported on the trigger platform.

Preferably, the fixing part, the trigger platform and the spring positioning rod are all cylindrical structures and are integrally formed, and the diameter of the fixing part is larger than that of the trigger platform and that of the spring positioning rod;

a plurality of blood taking needles are arranged at intervals at one end of the fixed part far away from the trigger platform;

the number of the bosses is two, and the two bosses are symmetrically arranged on two sides of the trigger platform;

the number of the positioning planes is two, the two positioning planes are symmetrically arranged on two sides of the trigger platform and are the same as the axial positions of the bosses.

Further preferably, the dial further comprises a barrier, the barrier is arranged on one side, close to the blood taking needle, of the boss, and the limiting rebound stopper is sleeved on the fixing part and located between the barrier and the top wall of the shell.

Further preferably, spacing bounce-back retaining ring includes retaining ring body and a plurality of elastic strip, the retaining ring body is the ring structure, a plurality of the elastic strip is followed the ring structure interval arrangement of retaining ring body, and a plurality of the elastic strip respectively with the slope of retaining ring body sets up.

Further preferably, the dial card is equipped with rear end housing, spring positioning groove, card angle arm and the card angle that connects gradually, the rear end housing with shell adaptation is connected, the spring positioning groove the card angle arm reaches the card angle set up in the inside of shell makes the elastic component is kept away from trigger platform's one end top is held in the spring positioning groove, the card angle is located the tip of card angle arm extends to its one side, be used for with boss adaptation joint.

Further preferably, two corner clamping arms and two corner clamping angles are arranged respectively, and the two corner clamping arms and the two corner clamping angles are symmetrically arranged;

the spring positioning rod penetrates through the dial clamp and extends to the outside of the shell.

Further preferably, a clamping portion and two chamfers which are arranged oppositely are arranged on the trigger button, and the trigger button is installed in the trigger window so that the clamping portion is supported on the inner wall of the shell;

the trigger button is perpendicular to the corner clamping arms, and the chamfer extends to the inner sides of the two corner clamping arms;

when the trigger button is pressed, the two chamfers respectively and gradually prop open the corresponding corner clamping arms, so that the clamping corners are separated from the corresponding bosses;

when the trigger button is loosened, the dial is pulled to enable the clamping angle to be matched and clamped with the boss.

Further preferably, the clamping part comprises two finger pressing plates which are arranged oppositely, and an accommodating cavity for placing the finger tip is formed between the two finger pressing plates.

Further preferably, the method further comprises the following steps:

the blood taking needle is arranged on the needle disc, the needle disc is arranged on the needle disc, and the needle disc is connected with the needle disc.

Compared with the prior art, the finger tip blood sampling device has the beneficial effects that:

in the utility model, the finger-end blood sampling device integrates needle outlet and blood sampling, simplifies the blood sampling process, liberates two hands and can be completed by only three steps; the blood sampling process is completely finished by the sterile device, the blood sample is relatively pollution-free, and the detection error is avoided; the requirement on the patient adaptability is relatively low, even for children, the operation is relatively simple, and the process is relatively easy; the needle rebounds after being withdrawn, and the needle point cannot be exposed due to the double-side clamping parts, so that medical care personnel can be effectively prevented from being accidentally stabbed; the blood sampling mode is more convenient and rapid for people, and the patient can independently finish blood sampling at home or in a hospital and is monitored by a medical care window, so that the time is saved, and the efficiency is improved; the utility model has the advantages of reasonable structural design, good stability, small vibration, high motion precision, safety, high efficiency, convenient operation and wide application range, brings convenience to medical work and simultaneously reduces the pain of patients.

Drawings

The foregoing features, technical features, advantages and embodiments are further described in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic view of a finger-tip lancing device according to one embodiment of the present invention;

FIG. 2 is a schematic view of another aspect of a finger-tip lancing device according to one embodiment of the present invention;

FIG. 3 is a cross-sectional view of a finger-tip lancing device according to one embodiment of the present invention;

FIG. 4 is a schematic structural view of a dial according to another embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of another embodiment of the dial of the present invention;

FIG. 6 is a schematic structural view of another perspective of a dial according to another embodiment of the present invention;

FIG. 7 is a schematic structural view of a dial card according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of another perspective of a dial card according to another embodiment of the present invention;

FIG. 9 is a schematic structural view of a position limiting rebound retainer ring according to another embodiment of the present invention;

FIG. 10 is a schematic structural view of a housing according to another embodiment of the present invention;

FIG. 11 is a schematic diagram of a trigger button according to another embodiment of the present invention;

FIG. 12 is a schematic diagram of another perspective view of a toggle button according to another embodiment of the present invention;

FIG. 13 is a schematic view of a finger-tip lancing device according to another embodiment of the present invention in use;

FIG. 14 is a schematic view of another embodiment of the finger-tip lancing device according to the present invention from another perspective;

FIG. 15 is a cross-sectional view of another embodiment of the finger-tip lancing device according to the present invention in use.

The reference numbers illustrate:

1. the blood collection device comprises a needle dial, 101, a spring positioning rod, 102, a trigger platform, 103, a boss, 104, a blood collection needle, 105, a blood collection port, 106, a blood collection channel, 107, a fixing part, 108, a blocking strip, 109, a positioning plane, 2, a needle dial clamp, 201, a clamping angle, 202, a clamping angle arm, 203, a spring positioning groove, 204, a rear end cover, 3, an elastic piece, 4, a limiting rebound retainer, 401, a retainer body, 402, an elastic strip, 5, a shell, 501, a finger press plate, 502, a trigger window, 6, a trigger button, 601, a clamping part, 602, a chamfer, 7 a blood collection bottle and 8 finger ends.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In the embodiments shown in the drawings, the directions such as up, down, left, right, front, and rear are used to explain the structure and movement of various components of the present invention not absolutely but relatively. These illustrations are appropriate when these components are in the positions shown in the figures. If the description of the positions of these components changes, the indication of these directions changes accordingly.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

As a specific embodiment, as shown in fig. 1 to 15, the present embodiment provides a finger tip blood sampling device, including: the needle dial comprises a shell 5, a needle dial 1, a limiting rebound retainer ring 4, a needle dial clamp 2 and an elastic piece 3. Wherein, shell 5 is hollow structure, is equipped with on the shell 5 and triggers window 502 and clamping part, triggers and is provided with trigger button 6 in the window 502, and the clamping part is located the one end of shell 5 to communicate with the inner chamber of shell 5. The needle dial 1 is provided with a blood taking needle 104 and a blood collecting channel 106, the blood taking needle 104 is arranged at one end of the needle dial 1, the needle dial 1 is arranged inside the shell 5, the blood taking needle 104 is located at one end close to the clamping part, and the blood collecting channel 106 is used for collecting blood. The limiting rebound retainer ring 4 is arranged between the dial 1 and the shell 5 and used for separating the blood taking needle 104 from the blood taking part. The dial clamp 2 is arranged inside the shell 5 and can be clamped with the dial 1 in an adaptive mode, and the elastic piece 3 is arranged between the dial 1 and the dial clamp 2. When the dial 1 is in adaptive clamping connection with the dial clamp 2, the elastic part 3 is in a compressed state, and the blood taking needle 104 is positioned in the inner cavity of the shell 5; when the trigger button 6 drives the dial 1 to be separated from the dial card 2, the elastic part 3 is in an extending state, and the blood taking needle 104 extends into the clamping part.

Specifically, as shown in fig. 4 to 6, the dial 1 includes a fixing portion 107, a trigger platform 102, and a spring positioning rod 101, which are connected in sequence, the lancet 104 is disposed at one end of the fixing portion 107 away from the trigger platform 102, a blood collection port 105 is disposed inside the fixing portion 107, and a blood collection channel 106 penetrates through the trigger platform 102 and the spring positioning rod 101 and communicates with the blood collection port 105. The lancet 104 may be a steel needle, and a plurality of lancets 104 are provided, and the plurality of lancets 104 are spaced apart from one end of the fixing portion 107 away from the trigger platform 102. The thickness of the skin at the finger tip varies from person to person, and the traditional tip blood taking needle only has one needle core, has different penetration depths, and influences the bleeding effect and the blood taking efficiency. By providing the lancet 104 in plural and providing the lancet 104 on the fixing portion 107 with adjustable depth, for example: the lancet 104 is screw-coupled to the fixing portion 107, and the depth of the lancet 104 can be adjusted by twisting it. Can improve the bleeding effect and the blood sampling efficiency, and can be suitable for blood sampling of special crowds.

The trigger platform 102 is provided with a boss 103 and a positioning plane 109, the boss 103 is used for being matched and clamped with a clamping angle 201 on the dial clamp 2, the positioning plane 109 is used for locking the relative positions of the dial 1 and the dial clamp 2 to prevent the dial 1 from rotating, and the two bosses 103 and the two positioning planes 109 are symmetrically arranged on two sides of the trigger platform 102. The fixing portion 107, the triggering platform 102 and the spring positioning rod 101 are all cylindrical structures and are integrally formed, and the diameter of the fixing portion 107 is larger than that of the triggering platform 102 and that of the spring positioning rod 101. The elastic member 3 may be a spring, and the elastic member 3 is fittingly sleeved on the spring positioning rod 101, so that one end of the elastic member is supported on the trigger platform 102. The dial 1 is further provided with a blocking strip 108, the blocking strip 108 is arranged on one side, close to the blood taking needle 104, of the boss 103, and the limiting rebound check ring 4 is sleeved on the fixing portion 107 and is located between the blocking strip 108 and the top wall of the shell 5.

As shown in fig. 9, the limiting rebounding retainer ring 4 includes a retainer ring body 401 and a plurality of elastic strips 402, the retainer ring body 401 is of a circular structure, the plurality of elastic strips 402 are arranged at intervals along the circular structure of the retainer ring body 401, and the plurality of elastic strips 402 are respectively arranged at acute angles with the retainer ring body 401.

In the embodiment, the needle dial 1 can be detachably arranged in the shell 5 as a disposable article, so that the blood taking needle 104 is safe and sanitary when in use, and the wound of a user is prevented from being infected; the blood taking needle 104 can pierce the body of the user instantly by means of the elastic force of the elastic part 3, and then can pop out of the body of the user instantly under the action of the resilience force of the limiting rebound retainer ring 4, so that the pain of the user can be relieved when the user takes blood, and the user is helped to finish the blood collection process in a short time.

As shown in fig. 7 and 8, the dial card 2 is provided with a rear end cover 204, a spring positioning groove 203, a card corner arm 202 and a card corner 201 which are connected in sequence, the rear end cover 204 is detachably connected with the housing 5 in an adaptive manner, the spring positioning groove 203, the card corner arm 202 and the card corner 201 are arranged inside the housing 5, so that one end of the elastic member 3, which is far away from the trigger platform 102, is supported in the spring positioning groove 203, and the card corner 201 is located at the end of the card corner arm 202 and extends towards one side thereof, and is used for being connected with the boss 103 in an adaptive manner. The two corner clamping arms 202 and the two corner clamping arms 201 are arranged respectively, the two corner clamping arms 202 and the two corner clamping arms 201 are symmetrically arranged, and the springs are positioned, and the springs 101 penetrate through the dial card 2 and extend to the outside of the shell 5.

As shown in fig. 11 and 12, a clamping portion 601 and two chamfers 602 arranged oppositely are provided on the trigger button 6, the trigger button 6 is installed in the trigger window 502, the clamping portion 601 is supported on the inner wall of the housing 5, the trigger button 6 is arranged perpendicular to the corner clamping arms 202, and the chamfers 602 extend to the inner sides of the two corner clamping arms 202. When the trigger button 6 is pressed, the two chamfers 602 gradually support the corresponding corner clamping arms 202 respectively, so that the corner clamping arms 201 are separated from the corresponding bosses 103; at the moment, the dial 1 is instantly popped out under the elastic force of the elastic part 3, so that the blood taking needle 104 is instantly punctured into the body of the user, and then is instantly popped out of the body of the user under the resilience force of the limiting rebound retainer ring 4. The one end that rear end cover 204 was kept away from to dog-ear 201 is the inclined plane, and when loosening trigger button 6, pulling dial 1 can make dog-ear 201 and boss 103 adaptation joint.

As shown in fig. 10, the clamping portion includes two finger-pressure plates 501 arranged oppositely, and a receiving cavity for placing the finger tip 8 is formed between the two finger-pressure plates 501, and the shape of the receiving cavity is matched with the finger tip 8. The finger pressing plate 501 is provided with an extending edge extending outwards, the finger end 8 is placed in the containing cavity during use, the containing cavity is reduced by pressing the extending edge, pressure is applied to the periphery of the blood sampling part by the finger pressing plate 501, pain in blood sampling can be dispersed, and blood sampling speed is increased.

As shown in fig. 13 to 15, the finger tip lancing device further includes: blood bottle 7, blood bottle 7 is connected with the needle dish 1 one end of keeping away from blood taking needle 104, and blood bottle 7 and blood collection passageway 106 intercommunication are used for collecting blood.

The blood sampling process using the finger tip blood sampling device in the embodiment is as follows:

inserting the finger end 8 into the middle of the two finger pressing plates 501, inserting the trigger button 6 from the trigger window 502, continuing to insert after contacting the corner clamping arm 202 until the two corners 201 are opened, releasing the elasticity of the elastic part 3, pricking the blood taking needle 104 on the needle dial 1 at the blood taking part of the finger end 8, and rebounding by the action of the limiting rebound retainer ring 4 to separate the blood taking needle 104 from the blood taking part; the finger tip is squeezed by repeatedly closing the finger plate 501, so that the blood beads flow out to enter the blood collection port 105, pass through the blood collection channel 106, finally flow into the blood collection bottle 7, and after a sufficient amount of blood sample is collected, the blood collection bottle 7 is pulled down and the bottle cap is screwed down, thereby completing blood collection.

The finger tip blood sampling device of the embodiment integrates needle withdrawing and blood sampling, simplifies the blood sampling process, liberates two hands and can be completed by only three steps; the blood sampling process is completely finished by the sterile device, the blood sample is relatively pollution-free, and the detection error is avoided; the requirement on the patient adaptability is relatively low, even for children, the operation is relatively simple, and the process is relatively easy; the needle rebounds after being withdrawn, and the needle point cannot be exposed due to the double-side clamping parts, so that medical care personnel can be effectively prevented from being accidentally stabbed; the blood sampling mode is more convenient and rapid for people, and the patient can independently finish blood sampling at home or in a hospital and is monitored by a medical care window, so that the time is saved, and the efficiency is improved; the utility model has the advantages of reasonable structural design, good stability, small vibration, high motion precision, safety, high efficiency, convenient operation and wide application range, brings convenience to medical work and simultaneously reduces the pain of patients.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A finger tip lancing device, comprising:

the trigger button is arranged in the trigger window, and the clamping part is positioned at one end of the shell and communicated with an inner cavity of the shell;

the needle dial is provided with a blood taking needle and a blood collecting channel, the blood taking needle is arranged at one end of the needle dial, the needle dial is arranged in the shell, the blood taking needle is located at one end close to the clamping part, and the blood collecting channel is used for collecting blood;

the limiting rebound retainer ring is arranged between the needle dial and the shell and is used for separating the blood taking needle from a blood taking part;

the dial clamp is arranged in the shell and can be in adaptive clamping connection with the dial;

the elastic piece is arranged between the dial and the dial clamp;

when the dial is in adaptive clamping connection with the dial card, the elastic piece is in a compressed state, and the blood taking needle is positioned in the inner cavity of the shell;

when the trigger button drives the dial and the dial clamp to be separated from clamping, the elastic piece is in an extending state, and the blood taking needle extends into the clamping part.

2. The finger tip lancing device of claim 1, wherein:

the needle dial comprises a fixing part, a trigger platform and a spring positioning rod which are sequentially connected, the blood taking needle is arranged at one end of the fixing part, which is far away from the trigger platform, a blood collecting port is arranged inside the fixing part, and a blood collecting channel penetrates through the trigger platform and the spring positioning rod and is communicated with the blood collecting port;

the trigger platform is provided with a boss which is used for being in adaptive clamping connection with the dial;

the trigger platform is provided with positioning planes which are symmetrically and longitudinally sliced, the positioning planes are used for locking the relative positions of the dial and the dial clamp and preventing the dial from rotating,

the elastic piece is sleeved on the spring positioning rod, so that one end of the elastic piece is supported on the trigger platform.

3. The finger tip lancing device of claim 2, wherein:

the fixing part, the trigger platform and the spring positioning rod are all cylindrical structures and are integrally formed, and the diameter of the fixing part is larger than that of the trigger platform and that of the spring positioning rod;

a plurality of blood taking needles are arranged at intervals at one end of the fixed part far away from the trigger platform;

the number of the bosses is two, and the two bosses are symmetrically arranged on two sides of the trigger platform;

the number of the positioning planes is two, the two positioning planes are symmetrically arranged on two sides of the trigger platform and are the same as the axial positions of the bosses.

4. The finger tip lancing device according to claim 2 or 3, wherein:

the needle dial further comprises a blocking strip, the blocking strip is arranged on one side, close to the blood taking needle, of the boss, and the limiting rebound blocking ring is sleeved on the fixing portion and located between the blocking strip and the top wall of the shell.

5. The finger tip lancing device of claim 4, wherein:

the limiting rebound check ring comprises a check ring body and a plurality of elastic strips, wherein the check ring body is of a circular ring structure, the elastic strips are arranged at intervals along the circular ring structure of the check ring body, and the elastic strips are obliquely arranged with the check ring body respectively.

6. The finger tip lancing device of claim 2, wherein:

the dial card is equipped with rear end housing, spring constant head tank, card angle arm and the card angle that connects gradually, the rear end housing with shell adaptation connection, the spring constant head tank the card angle arm reaches the card angle set up in the inside of shell makes the elastic component is kept away from trigger platform's one end top is held in the spring constant head tank, the card angle is located the tip of card angle arm extends to its one side, be used for with boss adaptation joint.

7. The finger tip lancing device of claim 6, wherein:

the two corner clamping arms and the two corner clamping arms are respectively arranged, and the two groups of corner clamping arms are symmetrically arranged;

the spring positioning rod penetrates through the dial clamp and extends to the outside of the shell.

8. The finger tip lancing device of claim 7, wherein:

the trigger button is provided with a clamping part and two chamfers which are oppositely arranged, and the trigger button is arranged in the trigger window so that the clamping part is supported on the inner wall of the shell;

the trigger button is perpendicular to the corner clamping arms, and the chamfer extends to the inner sides of the two corner clamping arms;

when the trigger button is pressed, the two chamfers respectively and gradually prop open the corresponding corner clamping arms, so that the clamping corners are separated from the corresponding bosses;

when the trigger button is loosened, the dial is pulled to enable the clamping angle to be matched and clamped with the boss.

9. The finger tip lancing device of claim 1, wherein:

the clamping part comprises two finger-pressure plates which are oppositely arranged, and an accommodating cavity for placing finger ends is formed between the two finger-pressure plates.

10. The finger tip lancing device of claim 1, further comprising:

the blood taking needle is arranged on the needle disc, the needle disc is arranged on the needle disc, and the needle disc is connected with the needle disc.

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