CN219070325U - Blood taking needle holder - Google Patents

Abstract

The utility model relates to a blood taking needle holder, and belongs to the technical field of medical appliances. The utility model provides a blood taking needle holder, including holding the both ends of a section of thick bamboo body and being equipped with opening and installation face respectively, the through-hole has been seted up on the installation face, the both sides downwardly extending of installing the frame forms the curb plate, the curb plate is installed on the installation face, installing the frame and holding a section of thick bamboo body and form the installation space, installing frame bottom installation face orientation extension forms the boss, the boss is inserted in the through-hole, slider slidable mounting is on the installation face, the one end that the installation face was kept away from to the slider is inserted in the installing frame, boss and slider form accommodation space, the middle part of slider extends to the direction of keeping away from the boss and forms the push pedal, the both sides of push pedal extend to be close to boss orientation and form two first buckles, be equipped with the buckle post that corresponds with first buckle on the curb plate inboard, first buckle and buckle post joint, sliding frame slidable mounting is in the installation space, and be located between push pedal and the installation face, and the cover is established outside slider and boss, sliding frame top is equipped with the impeller.

Description

Blood taking needle holder

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a blood taking needle holder.

Background

Along with the improvement of the living standard of people, various diseases are increased, the regular physical examination forms a necessary link in life, and one of the most commonly used medical instruments in physical examination is a blood taking needle.

Since the 30 s of the 20 th century, vacuum blood sampling technology was applied, and vacuum tube one-step direct blood sampling became a more convenient blood sampling means. The vacuum tube one-step direct blood sampling adopts a double-head blood taking needle, a needle holder and a blood sampling device of a vacuum blood taking tube.

The existing needle holder mainly comprises a blood taking needle connecting seat and a blood taking tube outer sleeve, wherein the blood taking needle connecting seat is arranged at the front end of the outer sleeve, after the double-head blood taking needle is installed and fixed, one end of the blood taking needle is positioned at the front end of the needle holder and used for puncturing, and the other end of the blood taking needle is positioned in the outer sleeve of the needle holder and used for being connected with a vacuum blood taking tube to take blood in a matched mode.

After blood collection, the needle holder and the double-head blood taking needle can be unscrewed and separated only by simultaneous operation of both hands, the blood taking needle is disposed of, the operation is inconvenient, and the risk of stabbing an operator exists.

Disclosure of Invention

The utility model provides a blood taking needle holder which is used for solving the problems of potential safety hazard and inconvenience caused by the fact that the blood taking needle is separated from the needle holder and needs two hands to operate when the blood taking needle is discarded after being used.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: a blood taking needle holder comprises a holding cylinder body, a mounting frame, a sliding block and a sliding frame. The end of the holding cylinder body is provided with an opening, the end far away from the opening is provided with a mounting surface, the mounting surface is provided with a through hole, the through hole is used for mounting the blood taking needle, the two opposite sides of the bottom of the mounting frame extend downwards to form a side plate, the side plate is mounted on the mounting surface, the mounting frame and the holding cylinder body form a mounting space, the bottom of one end of the mounting frame extends towards the direction close to the mounting surface to form a boss, the boss is inserted in the through hole, the sliding block is slidingly mounted on the mounting surface, one end of the sliding block far away from the mounting surface is inserted in the mounting frame, the boss and the sliding block form a containing space, one side of the boss close to the sliding block is provided with a first half-thread surface, one side of the sliding block close to the boss is provided with a second half-thread surface, the first half-thread surface and the second half-thread surface are positioned in the containing space and matched with the middle part of the blood taking needle to fix the blood taking needle, the middle part of slider extends to the direction of keeping away from the boss and forms the push pedal, the both sides of push pedal extend to be close to boss direction and form two first buckles, the boss is located between two first buckles, be equipped with the buckle post that corresponds with first buckle on the side that the curb plate is located the installation space, first buckle and buckle post joint, in order to make boss and slider butt with the middle part of fixed blood taking needle, sliding frame slidable mounting is in the installation space, and be located between push pedal and the installation face, the one end that the boss is close to the installation face and the one end that the slider is close to the installation face all insert and establish in the sliding frame, the one end that the top was kept away from to the slider is equipped with the impeller block that corresponds with first buckle, apply external force to the sliding frame and make impeller block and first buckle butt, in order to drive the slider and keep away from the boss.

Through the structure, the blood taking needle holder provided by the utility model can be disassembled from the blood taking needle holder by one hand, specifically, when the blood taking needle is installed, external force is applied to the push plate to drive the first buckle to be clamped with the buckle column, so that the boss is abutted with the sliding block, the first half thread surface and the second half thread surface are positioned in the accommodating space and matched with the middle part of the blood taking needle to fix the blood taking needle, after blood taking is finished, the needle holder is reversed to drive the long needle end of the blood taking needle to be positioned below the needle holder, the external force is applied to the sliding frame to drive the pushing block to be abutted with the first buckle to drive the first buckle to bend towards the direction close to the boss, and then the first buckle is not clamped with the buckle column, so that the sliding block is far away from the boss, the middle part of the blood taking needle is not fixed, and the blood taking needle is separated from the needle holder under the action of gravity.

Optionally, the first half-thread surface and the second half-thread surface enclose to form a threaded hole, and the threaded hole is coaxial with the through hole.

Optionally, one end of the two side plates away from the mounting frame is provided with a second buckle, the mounting surface is provided with two clamping holes corresponding to the two second buckles respectively, the through hole is positioned between the two buckles, and the second buckle is clamped in the clamping holes.

Optionally, the lancet holder further comprises two guide plates, wherein the two guide plates are vertically installed on the installation surface, the length direction of the guide plates is parallel to the length direction of the buckle, and the installation frame is located between the two guide plates.

Optionally, grooves are formed on two sides, close to the side plates, of the sliding frame, the buckling columns are located in the grooves, the length of each groove is larger than the width of each buckling column, and external force is applied to the sliding frame to drive the buckling columns to slide relative to the grooves.

Optionally, the mounting surface is provided with a sliding groove, the through hole is formed in the bottom surface of the sliding groove, the bottom of one end of the mounting frame, which is far away from the boss, is provided with a sliding groove which penetrates through the mounting frame in the radial direction of the boss, the axial direction of the sliding groove and the axial direction of the sliding groove are parallel to the length direction of the guide plate, the sliding groove and the sliding groove are located between the two clamping holes, two ends of the sliding block are respectively abutted with the bottom surface of the sliding groove and the bottom surface of the sliding groove, the sliding block slides in the sliding groove and the sliding groove under the action of external force, and one side of the sliding block, which is far away from the boss, is far away from the sliding frame, is abutted with the inner side of one end of the boss.

Optionally, the cross section of boss is half hexagon, the cross section of through-hole is the hexagon that corresponds with the cross section of boss, just the through-hole top edge is equipped with the guide face, the guide face with the axis of boss is the acute angle.

Optionally, a blood taking needle holder further includes an ejector strip, one end of the ejector strip is installed the inside of sliding frame is kept away from on the one end of slider, the other end of ejector strip extends to being close to the direction of slider, set up the axis on the boss and be on a parallel with sliding frame length direction's square hole, the ejector strip is kept away from the one end of installing frame passes through square hole inserts and establishes in the accommodation space, to the sliding frame exerts external force, so that the middle part butt of ejector strip and blood taking needle drives the middle part of blood taking needle and keeps away from first half screw thread face.

Optionally, the cross section of the cavity in the holding cylinder body is circular, the diameter of the cross section of the cavity gradually decreases from the opening to the mounting surface, and the diameter of the mounting surface is smaller than the diameter of the cross section of the opening.

Optionally, the lancet holder further comprises a holding plate, one end of the holding plate is sleeved on the outer side of one end of the holding cylinder away from the mounting surface, and the other end of the holding plate extends along the radial direction of the holding cylinder body to a direction away from the holding cylinder body.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a lancet holder according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a lancet holder according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a grip barrel body according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a mounting frame according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another structure of a mounting frame according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a slider according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a sliding frame according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of a lancet holder provided in an embodiment of the present utility model;

FIG. 9 is a partial enlarged view at A;

FIG. 10 is another cross-sectional view of a lancet holder provided in an embodiment of the present utility model;

FIG. 11 is a further cross-sectional view of a lancet holder provided in accordance with an embodiment of the present utility model;

fig. 12 is a schematic structural view of the lancet.

In the figure: 1-a holding cylinder body; 101-a through hole; 102-clamping holes; 103-a sliding groove; 104-a cavity; 105-mounting surface; 11-a guide plate; 12-a grip plate; 2-a mounting frame; 201-a chute; 21-side plates; 22-boss; 221-a first half flank; 222-square holes; 23-a snap post; 24-a second buckle; 3-a slider; 301-a second half thread face; 31-pushing plate; 311-flanging; 32-a first catch; 4-a sliding frame; 401-grooves; 402-anti-skid patterns; 41-pushing blocks; 42-ejecting the strip; 5-blood taking needle; 51-long needle end; 52-a thread sleeve; 53-short needle end.

Detailed Description

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Examples

The existing needle holder is inconvenient to operate and has the risk of stabbing operators because the needle holder and the double-head blood taking needle 5 can be unscrewed and separated only by simultaneous operation of both hands after blood taking is finished, and then the blood taking needle 5 is disposed of.

In order to solve the above-mentioned technical problems, the present embodiment provides a lancet 5 needle holder, which includes a holding cylinder body 1, a mounting frame 2, a slider 3, and a sliding frame 4 as shown in fig. 1 and 2.

The blood taking needle 5 accords with the national standard YY/T1618-2018, and the middle part of the blood taking needle 5 is sleeved with a thread sleeve 52 which is provided with a long needle end 51 and a short needle end 53 which are oppositely arranged as shown in fig. 12, thus the prior art is omitted herein.

The holding cylinder body 1 is provided with an opening at one end, the end far from the opening is provided with a mounting surface 105, the mounting surface 105 is provided with a through hole 101, the through hole 101 is used for inserting a blood taking needle 5, the two opposite sides of the bottom of the mounting frame 2 are extended downwards to form a side plate 21, the side plate 21 is mounted on the mounting surface 105, the mounting frame 2 and the holding cylinder body 1 form a mounting space, the bottom of one end of the mounting frame 2 is extended towards the direction close to the mounting surface 105 to form a boss 22, the boss 22 is inserted in the through hole 101, the sliding block 3 is slidingly mounted on the mounting surface 105, the end, far from the mounting surface 105, of the sliding block 3 is inserted in the mounting frame 2, the boss 22 and the sliding block 3 form a containing space, one side, close to the sliding block 3, of the boss 22 is provided with a first half thread surface 221, one side, close to the boss 22, of the sliding block 3 is provided with a second half thread surface 301, the first half thread surface 221 and the second half thread surface 301 are positioned in the accommodating space and matched with the middle part of the blood taking needle 5 to fix the blood taking needle 5, the middle part of the sliding block 3 extends away from the boss 22 to form a push plate 31, one end of the push plate away from the sliding block is downwards folded to form a folded edge 311 in order to enlarge the stress surface of the push plate 31, two sides of the push plate 31 extend towards the direction close to the boss 22 to form two first buckles 32, the boss 22 is positioned between the two first buckles 32, the side plate 21 positioned in the mounting space is provided with a buckle column 23 corresponding to the first buckles 32, the first buckles 32 are clamped with the buckle column 23, so that the boss 22 is abutted with the sliding block 3 to fix the middle part of the blood taking needle 5, the sliding frame 4 is slidably mounted in the mounting space and positioned between the push plate 31 and the mounting surface 105 and respectively abutted with the push plate 31 and the mounting surface 105, one end of the boss 22 close to the mounting surface 105 and one end of the sliding block 3 close to the mounting surface 105 are inserted into the sliding frame 4, as shown in fig. 7, one end of the top of the sliding frame 4 far away from the sliding block 3 is provided with a pushing block 41 corresponding to the first buckle 32, one end of the sliding frame 4 far away from the sliding block 3 is provided with an anti-skid pattern 402, and external force is applied to the sliding frame 4 by the anti-skid pattern 402 so that the pushing block 41 is abutted with the first buckle 32, so as to drive the sliding block 3 to be far away from the boss 22

Through the above structure, the lancet holder of the present embodiment can complete the detachment between the lancet 5 and the lancet holder with one hand, specifically, when the lancet 5 is installed, as shown in fig. 11, an external force is applied to the push plate 31 to drive the first buckle 32 and the buckle post 23 to be in clamping connection, so that the boss 22 is in clamping connection with the slider 3, so that the first half thread surface 221 and the second half thread surface 301 are located in the accommodating space and are matched with the thread sleeve 52 to fix the lancet 5, after the blood collection is completed, the lancet holder is reversed firstly, so that the long needle end 51 of the lancet 5 is driven to be located below the lancet holder, then, as shown in fig. 12, an external force is applied to the sliding frame 4 by the thumb to drive the push block 41 to be in clamping connection with the first buckle 32, so as to drive the first buckle to bend towards the direction close to the boss 22, so that the first buckle 32 is not in clamping connection with the buckle post 23, so that the slider 3 is far away from the boss 22, so that the middle of the lancet 5 is not fixed under the gravity of the lancet 5.

In order to enable the first half-thread surface 221 and the second half-thread surface 301 to cooperate with the thread bush 52 to fix the lancet 5 based on the above-described basis, the first half-thread surface 221 and the second half-thread surface 301 are surrounded to form a screw hole coaxial with the through hole 101, specifically, the thread bush 52 is screwed in the screw hole so that the lancet 5 is fixed on the needle holder.

Based on the fact that in order to enable the mounting frame 2 to be mounted on the mounting surface 105, as shown in fig. 9, the second buckles 24 are arranged at one ends, away from the mounting frame 2, of the two side plates 21, two buckling holes 102 corresponding to the two second buckles 24 respectively are formed in the mounting surface 105, the through holes 101 are located between the two buckling holes, and the second buckles 24 are buckled in the buckling holes 102.

In order to facilitate positioning of the mounting frame 2, as shown in fig. 3, the needle holder of the blood taking needle 5 further comprises two guide plates 11, the two guide plates 11 are integrally formed with the holding cylinder body 1, the height direction of each guide plate 11 is perpendicular to the mounting surface 105, the length direction of each guide plate 11 is parallel to the length direction of the corresponding buckle, and the mounting frame 2 is located between the two guide plates 11.

In order to prevent the sliding frame 4 from excessively moving in the installation space, as shown in fig. 7, grooves 401 are formed on two sides, close to the side plates 21, of the sliding frame 4, the buckling columns 23 are located in the grooves 401, the length L of the grooves 401 is greater than the width B of the buckling columns 23, and an external force is applied to the sliding frame 4 to drive the buckling columns 23 to slide relative to the grooves 401. Specifically, both peripheral surfaces of the groove 401 abut against the snap posts 23 to prevent excessive movement of the slide frame 4 within the installation space.

Based on the above, in order to enable the sliding block 3 to be slidably mounted in the mounting space, the sliding block 3 is not slid out of the mounting space. As shown in fig. 3, the mounting surface 105 is provided with a sliding groove 103, the through hole 101 is formed on the bottom surface of the sliding groove 103, as shown in fig. 5, the bottom of one end of the mounting frame 2 away from the boss 22 is provided with a sliding groove 201 penetrating through the mounting frame 2 along the radial direction of the boss 22, the axial direction of the sliding groove 103 and the axial direction of the sliding groove 201 are parallel to the length direction of the guide plate 11, the sliding groove 103 and the sliding groove 201 are positioned between two clamping holes 102, two ends of the sliding block 3 are respectively abutted with the bottom surface of the sliding groove 103 and the bottom surface of the sliding groove 201, the sliding block 3 slides in the sliding groove 103 and the sliding groove 201 under the action of external force, one side of the sliding block 3 away from the boss 22 is abutted with the inner side of the end of the sliding frame 4 away from the boss 22, specifically, the sliding block 3 is abutted with the boss 22 to prevent the sliding block 3 from sliding out of the mounting space from the direction of the boss 22.

In order to enable the boss 22 to be stably inserted into the through hole 101, the cross section of the boss 22 is in a semi-hexagonal shape as shown in fig. 5, the cross section of the through hole 101 is in a hexagonal shape corresponding to the cross section of the boss 22 as shown in fig. 3, the upper edge of the through hole 101 is provided with a guiding surface, the angle alpha between the guiding surface and the axis of the boss 22 is an acute angle, the range of the angle alpha is 30 degrees less than or equal to 60 degrees, the angle alpha between the guiding surface and the axis of the boss 22 can be 30 degrees, 40 degrees, 50 degrees and 60 degrees, and the embodiment of the disclosure is not limited to this, and the angle alpha between the guiding surface and the mounting surface 105 is less than 30 degrees and greater than 60 degrees, which results in the guiding capability of the guiding surface to the boss 22 being weakened.

In order to prevent the blood taking needle 5 from being remained in the accommodating space during disassembly, as shown in fig. 7, the needle holder of the blood taking needle 5 further comprises an ejector strip 42, one end of the ejector strip 42 is integrally formed with the sliding frame 4 and is positioned at one end of the sliding frame 4 far away from the sliding block 3, the other end of the ejector strip 42 extends towards the direction close to the sliding block 3, a square hole 222 with an axis parallel to the length direction of the sliding frame 4 is formed on the boss 22 as shown in fig. 4 and 5, and one end of the ejector strip 42 far away from the mounting frame 2 is inserted in the accommodating space through the square hole 222 as shown in fig. 10 and 11. Specifically, an external force is applied to the slide frame 4 so that the ejector strip 42 abuts against the middle portion of the lancet 5 and drives the middle portion of the lancet 5 away from the first half thread surface 221.

In order to make the blood collector occupy smaller space and save transportation space, the cross section of the cavity 104 in the holding cylinder body 1 is circular as shown in fig. 8, the diameter D1 of the cross section of the cavity 104 gradually decreases from the opening to the mounting surface 105, and the diameter D2 of the mounting surface 105 is smaller than the diameter D3 of the cross section of the opening. Specifically, one end of one needle holder close to the mounting surface 105 is inserted into an opening of the other needle holder, so that the space occupied by a plurality of needle holders is reduced, and products can be stored in an overlapping manner in package transportation, and the package storage quantity in a unit space is effectively increased.

In order to facilitate the holding of the blood taking staff, as shown in fig. 8, a needle holder for the blood taking needle 5 further comprises a holding plate 12, the holding plate 12 and the holding cylinder body 1 are integrally formed, one end of the holding plate 12 is sleeved on the outer side of one end of the holding cylinder far away from the mounting surface 105, the other end of the holding plate 12 extends along the radial direction of the holding cylinder body 1 in the direction far away from the holding cylinder body 1, and more preferably, an arc-shaped recess is formed in the holding plate 12, so that the needle holder is conveniently held by a thumb and an index finger when the blood taking needle 5 is mounted, and the mounting operation of the blood taking needle 5 is facilitated.

To sum up, when installing the blood taking needle 5, firstly, as shown in fig. 11, an external force is applied to the push plate 31 to drive the first buckle 32 and the buckle post 23 to be clamped, so that the boss 22 is abutted with the sliding block 3, a threaded hole is formed by surrounding the first half-threaded surface 221 and the second half-threaded surface 301, the thread sleeve 52 is screwed into the threaded hole, so that the blood taking needle 5 is fixed on the needle holder, the short needle end 53 is located in the holding cylinder body 1 to be conveniently connected with the blood taking tube, and the long needle end 51 is located outside the holding cylinder body 1 to be convenient for taking blood, after blood taking is completed, firstly, the needle holder is reversed to drive the long needle end 51 of the blood taking needle 5 to be located below the needle holder, then, as shown in fig. 12, the external force is applied to the sliding frame 4 by the thumb to drive the push block 41 to be abutted with the first buckle 32, so as to drive the first bayonet to bend towards the direction close to the boss 22, so that the first buckle end 53 is no longer located in the holding cylinder body 1, after that the long needle end 51 is located outside the holding cylinder body 1, the blood taking needle 5 is separated from the sliding block 2 by the first buckle post 2, and the sliding block 2 is not far from the thread 5, and the thread 5 is far away from the sliding frame 5, so that the thread 5 is far from the middle part is far from the sliding frame 2 by the sliding block 2, and the thread 5 is far from the boss is far from the thread 5. Therefore, the needle holder has the characteristics of simple installation with the blood taking needle 5 and capability of completing the disassembly between the blood taking needle 5 and the needle holder by one hand.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A lancet holder, comprising:

one end of the holding cylinder body is provided with an opening, one end far away from the opening is provided with a mounting surface, the mounting surface is provided with a through hole, and the through hole is used for inserting a blood taking needle;

the mounting frame and the holding cylinder body form a mounting space, the bottom of one end of the mounting frame extends towards the direction close to the mounting surface to form a boss, and the boss is inserted into the through hole;

the sliding block is slidably mounted on the mounting surface, one end of the sliding block, far away from the mounting surface, is inserted into the mounting frame, the boss and the sliding block form a containing space, a first half-thread surface is formed on one side, close to the sliding block, of the boss, a second half-thread surface is formed on one side, close to the boss, of the sliding block, the first half-thread surface and the second half-thread surface are located in the containing space and are matched with the middle part of a blood taking needle to fix the blood taking needle, the middle part of the sliding block extends to a direction far away from the boss to form a push plate, two sides of the push plate extend to a direction close to the boss to form two first buckles, the boss is located between the two first buckles, a buckle column corresponding to the first buckle is arranged on one side, located in the mounting space, of the side plate is clamped with the buckle column, and the boss is abutted to the sliding block to fix the middle part of the blood taking needle;

the sliding frame is slidably installed in the installation space and is located between the pushing plate and the installation surface, one end, close to the installation surface, of the boss and one end, close to the installation surface, of the sliding block are inserted into the sliding frame, one end, away from the sliding block, of the top of the sliding frame is provided with a pushing block corresponding to the first buckle, and external force is applied to the sliding frame to enable the pushing block to be in butt joint with the first buckle so as to drive the sliding block to be away from the boss.

2. The lancet holder of claim 1, wherein the first half-threaded surface and the second half-threaded surface define threaded bores, the threaded bores being coaxial with the through bore.

3. The lancet holder according to claim 2, wherein a second fastener is provided at one end of the two side plates away from the mounting frame, two fastener holes corresponding to the two second fasteners are provided on the mounting surface, the through hole is located between the two fasteners, and the second fastener is fastened in the fastener holes.

4. A lancet holder according to claim 3, further comprising:

the two guide plates are vertically arranged on the mounting surface, the length direction of each guide plate is parallel to the length direction of the corresponding buckle, and the mounting frame is positioned between the two guide plates.

5. The lancet holder of claim 4, wherein grooves are formed in two sides of the sliding frame, which are close to the side plates, the buckling columns are located in the grooves, the length of the grooves is larger than the width of the buckling columns, and an external force is applied to the sliding frame to drive the buckling columns to slide relative to the grooves.

6. The lancet holder according to claim 5, wherein a sliding groove is formed in the mounting surface, the through hole is formed in the bottom surface of the sliding groove, a sliding groove penetrating through the mounting frame in the radial direction of the boss is formed in the bottom of one end of the mounting frame away from the boss, the axial direction of the sliding groove and the axial direction of the sliding groove are parallel to the length direction of the guide plate, the sliding groove and the sliding groove are located between the two clamping holes, two ends of the sliding block are respectively abutted to the bottom surface of the sliding groove and the bottom surface of the sliding groove, the sliding block slides in the sliding groove under the action of external force, and one side of the sliding block away from the boss is abutted to the inner side of the sliding frame away from one end of the boss.

7. The lancet holder according to claim 6, wherein the cross section of the boss is semi-hexagonal, the cross section of the through hole is hexagonal corresponding to the cross section of the boss, and the upper edge of the through hole is provided with a guide surface, and the guide surface forms an acute angle with the axis of the boss.

8. The lancet holder of claim 5, further comprising:

and one end of the ejection strip is installed at one end of the sliding frame, which is far away from the sliding block, the other end of the ejection strip extends towards the direction close to the sliding block, a square hole with the axis parallel to the length direction of the sliding frame is formed in the boss, one end of the ejection strip, which is far away from the mounting frame, is inserted into the accommodating space through the square hole, and external force is applied to the sliding frame, so that the ejection strip is abutted to the middle part of the blood taking needle and drives the middle part of the blood taking needle to be far away from the first half thread surface.

9. The lancet holder of claim 1, wherein the cross-section of the cavity in the grip body is circular, the cross-section of the cavity has a diameter that decreases from the opening to the mounting surface, and the mounting surface has a diameter that is smaller than the cross-section of the opening.

10. The lancet holder of any one of claims 1-9, further comprising:

and one end of the holding plate is sleeved on the outer side of one end of the holding cylinder far away from the mounting surface, and the other end of the holding plate extends along the radial direction of the holding cylinder body to the direction far away from the holding cylinder body.

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