CN219089308U

CN219089308U - Blood taking needle holder

Info

Publication number: CN219089308U
Application number: CN202222539489.2U
Authority: CN
Inventors: 马庚英; 钱浩; 廖化; 周运强
Original assignee: Chengdu Puth Medical Plastics Packaging Co ltd
Current assignee: Chengdu Puth Medical Plastics Packaging Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-05-30
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to a blood taking needle holder, and belongs to the technical field of medical appliances. The blood taking needle holder comprises a hand-held sleeve body, wherein the hand-held sleeve body is provided with an opening end and a sealing end, the sealing end is provided with a mounting surface, and the mounting surface is provided with a hole. The blood taking needle is provided with a collecting end and a needle head end, a thread sleeve is sleeved outside the blood taking needle, and the collecting end is inserted into the handheld cylinder body through a through hole. One end of a first clamping piece of the needle holder is arranged on the mounting surface, and two sides of the first clamping piece extend outwards to form a boss. The sliding mounting frame is arranged on the mounting surface, and one end, far away from the mounting surface, of the first clamping piece penetrates through the mounting frame. One end of the second clamping piece is arranged on the inner side surface of the mounting frame, the other end of the second clamping piece extends towards the position close to the first clamping piece, a containing space is formed between the first clamping piece and the second clamping piece, two limiting strips are arranged in the mounting frame, the first clamping piece and the second clamping piece are located between the two limiting strips, and a first positioning groove and a second positioning groove which correspond to the boss are formed in opposite side surfaces of the two limiting strips.

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

Venous blood sampling is the most common method used in medicine to check whether a patient's body fluid is normal or not, and is a revolution in clinical diagnostics. By venous blood sampling detection, the health condition of the individual can be evaluated; can assist doctors in ascertaining the cause; disease changes can be monitored to determine the outcome of treatment; the treatment regimen can be adjusted according to the change in venous blood collection values. Since the 30 s of the 20 th century, vacuum blood collection technology was applied. The vacuum tube one-step direct blood sampling becomes a more advanced blood sampling means. The vacuum tube is used for directly taking blood in one step, and the double-head blood taking needle and the vacuum blood taking tube are matched to complete blood taking. In addition, in order to enable medical staff to operate conveniently, the needle holder is sleeved outside the vacuum blood collection tube, so that the blood collection needle can be conveniently installed and fixed.

The existing needle holder mainly comprises a blood taking needle connecting seat and a blood taking tube outer sleeve; the blood taking needle connecting seat is positioned at the front end of the outer sleeve, after the double-head blood taking needle is installed and fixed, one end of the double-head blood taking needle is positioned at the front end of the needle holder and used for puncturing, and the other end of the double-head blood taking needle is positioned in the outer sleeve of the needle holder and used for being connected with the vacuum blood taking tube to be matched with blood taking. 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 solves the problems of unsafe and inconvenient operation of two-hand operation when a blood taking needle is separated from the needle holder by improving the structure composition of a continuous part of the blood taking needle.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the utility model provides a blood taking needle holder includes handheld section of thick bamboo body, blood taking needle, first holder, installing frame, second holder and two spacing, and handheld section of thick bamboo body has open end and seals the end, seals the end and has the installation face, and the through-hole has been seted up to the installation face. The blood taking needle is provided with a collecting end and a needle head end, a thread sleeve is sleeved outside the blood taking needle, and the collecting end is inserted into the handheld cylinder body through a through hole. One end of the first clamping piece is arranged on the mounting surface, and two sides of the first clamping piece extend outwards to form a boss. The mounting frame is slidably mounted on the mounting surface, and one end, far away from the mounting surface, of the first clamping piece penetrates into the mounting frame. One end of the second clamping piece is arranged on the inner side face of the mounting frame, the other end of the second clamping piece extends towards the position close to the first clamping piece, a first thread surface is formed on one side, close to the second clamping piece, of the first clamping piece, a second thread surface is formed on one side, close to the first clamping piece, of the second clamping piece, an accommodating space is formed between the first clamping piece and the second clamping piece, and the thread sleeve is located in the accommodating space and matched with the first thread surface and the second thread surface to fix the blood taking needle. The two limiting strips are arranged on the mounting frame and located in the mounting frame, the first clamping piece and the second clamping piece are located between the two limiting strips, the opposite side faces of the two limiting strips are provided with a first positioning groove and a second positioning groove which correspond to the boss, the first positioning groove is close to the second clamping piece, the boss is clamped in the first positioning groove so that the first clamping piece is abutted to the second clamping piece, and the boss slides into the second positioning groove under the action of external force so that the first clamping piece is separated from the second clamping piece.

Through the structure, the blood taking needle holder provided by the utility model can be disassembled between the blood taking needle and the needle holder by one hand, specifically, when the blood taking needle is installed, the boss is clamped in the first positioning groove to drive the first clamping piece to be abutted with the second clamping piece, then the collecting end of the blood taking needle is inserted into the handheld cylinder body through the through hole, and the blood taking needle is rotated to drive the thread sleeve to be matched with the first thread surface and the second thread surface so as to drive the blood taking needle to be in threaded connection with the handheld cylinder body, so that the installation of the blood taking needle and the needle holder is completed. When the blood taking needle is disassembled, the needle holder is reversed firstly to drive the needle head end of the blood taking needle to be positioned below the needle holder, then an external force is applied to the mounting frame to drive the boss to slide into the second positioning groove so as to drive the first clamping piece to be separated from the second clamping piece, and then the second thread surface and the thread sleeve are driven not to be matched any more, and then the blood taking needle is separated from the handheld cylinder body under the action of gravity.

Optionally, the opposite both sides of the bottom of installing frame are equipped with the buckle, set up on the installation face with two card holes of buckle one-to-one, two card holes with the inside of holding a section of thick bamboo body is linked together, two card holes are close to the inner wall upper edge of first holder has the guide surface, the guide surface with the installation is personally submitted the acute angle, the buckle passes the card hole, the bottom of installing frame with installation face butt, the buckle card is established in the card hole, the length of two card holes is greater than the length of two buckles, to the installing frame exerts external force in order to drive the installing frame for the installation face slides.

Optionally, two bar holes are formed in the mounting surface, the length direction of the two bar holes is parallel to the length direction of the two clamping holes, the two bar holes are located between the two clamping holes, the through holes are located between the two bar holes, the bar holes correspond to the clamping holes one to one, and the two bosses are close to the two bar holes respectively.

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

Optionally, a blood taking needle holder further includes an ejector, the ejector is installed on the installation frame, and is located the inside of installation frame is kept away from the one end of second holder, first holder is seted up along the axial and is run through the opening of first holder outer wall, the one end of ejector passes through the opening inserts and establishes in the accommodation space, to the installation frame is exerted external force, so as to drive the installation frame is relative to the installation face slides, so that the ejector with the thread bush butt drives the thread bush is kept away from first thread face.

Optionally, at least two grooves are formed on one side, far away from the ejection piece, of the limiting strip, and the first positioning groove and the second positioning groove are located between two adjacent grooves.

Optionally, the lancet holder further includes a limiting plate, one end of the limiting plate is mounted at an edge of the mounting frame, which is close to the side surface of the mounting surface, and the other end of the limiting plate extends in a direction close to the mounting surface and is located between the opening end and the sealing end, and external force is applied to the limiting plate, so that the second clamping piece is driven to be far away from the first clamping piece.

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

Optionally, the handheld cylinder body is internally provided with a cavity, the cross section of the cavity is circular, and the diameter of the cross section of the cavity gradually decreases from the opening end to the sealing end.

Optionally, the lancet holder further comprises a side wall plate, wherein the side wall plate is sleeved on the outer side of the opening end and extends along the radial direction of the handheld cylinder body in a direction away from the handheld 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 a schematic structural view of a lancet;

fig. 3 is a schematic structural diagram of a mounting frame according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a handheld cylinder body according to an embodiment of the present utility model;

FIG. 5 is a partial enlarged view at A;

FIG. 6 is a schematic view showing another structure of a lancet holder according to an embodiment of the present utility model;

FIG. 7 is a schematic view showing another structure of a lancet holder 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 B.

In the figure: 1-a handheld cylinder body; 11-through holes; 12-clamping holes; 13-bar-shaped holes; 14-a guide plate; 15-a cavity; 2-a mounting frame; 21-a buckle; 3-a first clamping member; 31-boss; 32-opening; 33-a first thread face; 4-a second clamping member; 41-a second thread face; 5-limiting strips; 51-a first positioning groove; 52-a second positioning groove; 53-groove; 6-ejection piece; 7-limiting plates; 8-side coaming; 9-a blood taking needle; 91-needle end; 92-thread sleeve; 93-collection 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-ended blood taking needle 9 can be unscrewed and separated only by simultaneous operation of both hands after blood taking is finished, and the blood taking needle 9 is disposed of.

In order to solve the above-mentioned technical problem, the present embodiment provides a lancet 9 needle holder, as shown in fig. 1, comprising: the blood taking needle comprises a handheld cylinder body 1, a blood taking needle 9, a first clamping piece 3, a mounting frame 2, a second clamping piece 4 and two limiting strips 5.

The lancet 9 is a lancet 9 satisfying national standard YYT1618-2018, which is a disposable human venous blood sample collection needle, and is not described herein.

As shown in fig. 4, the handheld cylinder body 1 has an opening 32 end and a sealing end, the sealing end has a mounting surface 16, and as shown in fig. 5, the mounting surface 16 is provided with a through hole 11. As shown in fig. 2, the lancet 9 has a collection end 93 and a needle end 91, the lancet 9 is externally sleeved with a screw sleeve 92, and the collection end 93 is inserted into the hand-held cartridge body 1 through the through hole 11. The first clamping piece 3 is integrally formed with the handheld cylinder body 1 and is located on the mounting surface 16, and two sides of the first clamping piece 3 extend outwards to form a boss 31. The mounting frame 2 is slidably mounted on the mounting surface 16, and one end of the first clamping member 3, which is far away from the mounting surface 16, is arranged in the mounting frame 2 in a penetrating manner. One end of the second clamping member 4 is integrally formed with the mounting frame 2 and is positioned on the inner side surface of the mounting frame 2 as shown in fig. 3, the other end extends towards the side close to the first clamping member 3, a first threaded surface 33 is formed on the side close to the second clamping member 4 of the first clamping member 3 as shown in fig. 5, a second threaded surface 41 is formed on the side close to the first clamping member 3 of the second clamping member 4 as shown in fig. 6 and 7, a containing space is formed between the first clamping member 3 and the second clamping member 4, a threaded sleeve 92 is positioned in the containing space and is matched with the first threaded surface 33 and the second threaded surface 41 to fix the blood taking needle 9, as shown in fig. 3, the two limiting strips 5 are integrally formed with the mounting frame 2 and are located inside the mounting frame 2, the first clamping piece 3 and the second clamping piece 4 are located between the two limiting strips 5, a first positioning groove 51 and a second positioning groove 52 corresponding to the boss 31 are formed in opposite sides of the two limiting strips 5, the first positioning groove 51 is close to the second clamping piece 4, the boss 31 is clamped in the first positioning groove 51 as shown in fig. 7, so that the first clamping piece 3 is abutted with the second clamping piece 4, and the boss 31 slides into the second positioning groove 52 under the action of external force as shown in fig. 6, so that the first clamping piece 3 is separated from the second clamping piece 4.

Through the above structure, the disassembly between the lancet 9 and the needle holder can be completed by one hand by the lancet 9 holder provided in this embodiment, specifically, when the lancet 9 is installed, the boss 31 is clamped in the first positioning groove 51 as shown in fig. 6 to drive the first clamping member 3 to abut against the second clamping member 4, then the collecting end 93 of the lancet 9 is inserted into the handheld cylinder body 1 through the through hole 11, the lancet 9 is rotated to drive the threaded sleeve 92 to cooperate with the first threaded surface 33 and the second threaded surface 41, so as to drive the lancet 9 to be screwed on the handheld cylinder body 1, and then the installation of the lancet 9 and the needle holder is completed. When the blood taking needle 9 is disassembled, the needle holder is firstly reversed to drive the needle head end 91 of the blood taking needle 9 to be positioned below the needle holder and to be abutted against the outer side of the hand holding cylinder body 1 by the index finger of any hand close to the tiger mouth side, then, as shown in fig. 6, an external force F1 is applied to the mounting frame 2 by using the thumb to drive the boss 31 to slide into the second positioning groove 52 so as to drive the first clamping piece 3 to be separated from the second clamping piece 4, and then the second thread surface 41 is driven to be not matched with the thread sleeve 92, and then, the blood taking needle 9 is separated from the hand holding cylinder body 1 under the action of gravity.

Based on the above foundation, in order to enable the mounting frame 2 to be slidably mounted on the mounting surface 16, as shown in fig. 8 and 9, two clamping holes 12 corresponding to the clamping holes 21 one by one are formed on the mounting surface 16, the two clamping holes 12 are communicated with the interior of the handheld cylinder body 1, in order to facilitate the mounting of the clamping holes 21, the upper edge of the inner wall of the two clamping holes 12, which is close to the first clamping piece 3, is provided with a guiding surface, the angle α formed by the guiding surface and the mounting surface 16 is an acute angle, the range of the angle α is 30 ° -60 °, the angle α formed by the guiding surface and the mounting surface 16 can be 30 °, 40 °, 50 ° and 45 °, the embodiment of the disclosure is not limited thereto, the angle α formed by the guiding surface and the mounting surface 16 is smaller than 30 ° and greater than 60 ° can lead to the guiding capability of the guiding surface 21 being weakened, the clamping holes 21 penetrate through the clamping holes 12, the bottom of the mounting frame 2 is abutted with the mounting surface 16, the clamping holes 21 are clamped in the clamping holes 12, the length H of the two clamping holes 12 is greater than the length H21, as shown in fig. 3 and 4, the length H of the mounting frame 2 is specifically, and the external force is applied to the mounting frame 2 is slid relative to the mounting surface 16.

In order to facilitate the snap 21 to be snapped into the snap hole 12, as shown in fig. 5 and 9, two bar holes 13 are formed in the mounting surface 16, the length direction of the two bar holes 13 is parallel to the length direction of the two snap holes 12, the two bar holes 13 are located between the two snap holes 12, the through hole 11 is located between the two bar holes 13, the bar holes 13 are in one-to-one correspondence with the snap holes 12, and the two bosses 31 are respectively close to the two bar holes 13, specifically, the bar holes 13 are used for releasing bending stress received by the snap holes 12 when the snap 21 is snapped into.

Optionally, as shown in fig. 4, the needle holder of the lancet 9 further includes two guide plates 14, the two guide plates 14 are vertically mounted on the mounting surface 16 and located on opposite sides of the mounting surface 16, the mounting frame 2 is between the two guide plates 14, and the length direction of the mounting frame 2 is parallel to the length direction of the guide plates 14.

In order to prevent the lancet 9 from abutting against the first threaded surface 33 and remaining on the handheld cylinder body 1 when the lancet 9 is detached, a lancet holder further comprises an ejector 6, as shown in fig. 3, the ejector 6 is integrally formed with the mounting frame 2 and is located at one end of the mounting frame 2 away from the second clamping member 4, the first clamping member 3 is provided with an opening 32 penetrating through the outer wall of the first clamping member 3 along the axial direction, and one end of the ejector 6 is inserted into the accommodating space through the opening 32. Specifically, an external force is applied to the mounting frame 2 to drive the mounting frame 2 to slide relative to the mounting surface 16, so as to drive the ejector 6 to abut against the threaded sleeve 92, and further drive the threaded sleeve 92 to be away from the first threaded surface 33.

In order to make the limit bar 5 more smooth in elastic deformation and thus make the switching of the boss 31 between the first positioning groove 51 and the second positioning groove 52 smoother, two grooves 53 are formed in the limit bar 5 as shown in fig. 3, and the first positioning groove 51 and the second positioning groove 52 are located between the two grooves 53. Specifically, the boss 31 causes the limit bar 5 to elastically deform when switching between the first positioning groove 51 and the second positioning groove 52, and the groove 53 is used for releasing the bending stress generated by the elastic deformation of the limit bar 5

In order to make the area of the mounting plate to which external force can be applied larger, and in order to prevent the mounting frame 2 from excessively displacing relative to the mounting surface 16, as shown in fig. 3, a lancet 9 holder further includes a limiting plate 7, wherein the limiting plate 7 is integrally formed with the mounting frame 2, one end of the limiting plate 7 is located at the edge of the side surface of the mounting frame 2, which is close to the mounting surface 16, and the other end extends towards the direction, which is close to the mounting surface 16, and is located between the opening 32 end and the sealing end, specifically, external force is applied to the limiting plate 7 to drive the second clamping member to move away from the first clamping member, and at the same time, one side, which is close to the handheld cylinder body 1, of the limiting plate 7 abuts against the outer side of the handheld cylinder body 1 to prevent the mounting frame 2 from excessively displacing relative to the mounting surface 16.

Based on the above, in order to enable the blood taking needle 9 to be screwed on the hand-held barrel body 1, the threaded surface of the first threaded surface 33 is matched with the threaded surface of the second threaded surface 41 to form a threaded hole, the threaded hole is coaxial with the through hole 11, and the threaded hole is matched with the outer side of the threaded sleeve 92.

In order to facilitate the installation of the blood collection tube, the handheld cylinder body 1 is provided with a cavity 15, the cross section of the cavity 15 is circular, and the diameter of the cross section of the cavity 15 gradually decreases from the opening 32 end to the sealing end.

In order to make the holding cylinder body 1 easier to hold, a lancet 9 holder further includes a side wall plate 8 as shown in fig. 9, the side wall plate 8 being fitted over the outside of the end of the opening 32 and extending in the radial direction of the holding cylinder body 1 in a direction away from the holding cylinder body 1.

To sum up, in the process of installing the lancet 9, first, as shown in fig. 7, the boss 31 is clamped in the first positioning groove 51 to drive the first clamping member 3 to abut against the second clamping member 4, then the collecting end 93 of the lancet 9 is inserted into the handheld cylinder body 1 through the through hole 11, and the lancet 9 is rotated to drive the threaded sleeve 92 to cooperate with the first threaded surface 33 and the second threaded surface 41, so as to drive the lancet 9 to be screwed on the handheld cylinder body 1, thereby completing the installation of the lancet 9 and the needle holder. In the process of disassembling the blood taking needle 9, the needle holder is reversed to drive the needle head end 91 of the blood taking needle 9 to be located below the needle holder and to be abutted against the outer side of the hand holding cylinder body 1 by the index finger of any hand close to the tiger mouth side, then, as shown in fig. 6, an external force F1 is applied to the mounting frame 2 by the thumb to drive the boss 31 to slide into the second positioning groove 52 so as to drive the first clamping piece 3 to be separated from the second clamping piece 4, and then drive the second thread surface 41 to be not matched with the thread sleeve 92 any more, meanwhile, the ejector 6 is abutted against the thread sleeve 92 and drives the thread sleeve 92 to be far away from the first thread surface 33, and then the blood taking needle 9 is separated from the hand holding cylinder body 1 under the action of gravity. Subsequently, as shown in fig. 7, an external force F2 is applied to the mounting frame 2 to drive the boss 31 to slide into the first positioning groove 51, so that the first clamping member 3 abuts against the second clamping member 4 to facilitate the next mounting of the lancet 9, and thus, the lancet holder has a simple mounting with the lancet 9, and the detachment between the lancet 9 and the lancet holder can be completed with 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

1. A lancet holder, comprising:

the handheld cylinder body is provided with an opening end and a sealing end, the sealing end is provided with a mounting surface, and the mounting surface is provided with a through hole;

the blood taking needle is provided with a collecting end and a needle head end, a thread sleeve is sleeved outside the blood taking needle, and the collecting end is inserted into the handheld cylinder body through the through hole;

one end of the first clamping piece is arranged on the mounting surface, and two sides of the first clamping piece extend outwards to form a boss;

the mounting frame is slidably mounted on the mounting surface, and one end, away from the mounting surface, of the first clamping piece penetrates through the mounting frame;

one end of the second clamping piece is arranged on the inner side surface of the mounting frame, the other end of the second clamping piece extends towards the position close to the first clamping piece, a first thread surface is formed on one side, close to the second clamping piece, of the first clamping piece, a second thread surface is formed on one side, close to the first clamping piece, of the second clamping piece, an accommodating space is formed between the first clamping piece and the second clamping piece, and the thread sleeve is positioned in the accommodating space and matched with the first thread surface and the second thread surface to fix the blood taking needle;

the two limiting strips are arranged on the mounting frame and located in the mounting frame, the first clamping piece and the second clamping piece are located between the two limiting strips, a first positioning groove and a second positioning groove corresponding to the boss are formed in the opposite side surfaces of the two limiting strips, the first positioning groove is close to the second clamping piece, the boss is clamped in the first positioning groove, so that the first clamping piece is abutted to the second clamping piece, and the boss slides into the second positioning groove under the action of external force, so that the first clamping piece is separated from the second clamping piece.

2. The blood taking needle holder according to claim 1, wherein two opposite sides of the bottom of the mounting frame are provided with buckles, two clamping holes corresponding to the buckles one by one are formed in the mounting surface, the two clamping holes are communicated with the inside of the handheld cylinder body, the two clamping holes are close to the upper edge of the inner wall of the first clamping piece and are provided with guide surfaces, the guide surfaces and the mounting surface form acute angles, the buckles penetrate through the clamping holes, the bottom of the mounting frame is abutted to the mounting surface, the buckles are clamped in the clamping holes, the lengths of the two clamping holes are larger than those of the two buckles, and an external force is applied to the mounting frame to drive the mounting frame to slide relative to the mounting surface.

3. The lancet holder according to claim 2, wherein the mounting surface is provided with two bar-shaped holes, the length directions of the two bar-shaped holes are parallel to the length directions of the two clamping holes, the two bar-shaped holes are located between the two clamping holes, the through holes are located between the two bar-shaped holes, the bar-shaped holes are in one-to-one correspondence with the clamping holes, and the two bosses are respectively close to the two bar-shaped holes.

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

the two guide plates are vertically arranged on the mounting surface and are positioned on two opposite sides of the mounting surface, the mounting frame is arranged between the two guide plates, and the length direction of the mounting frame is parallel to the length direction of the guide plates.

5. The lancet holder of claim 1, further comprising:

the ejection piece is arranged on the mounting frame and is positioned at one end, away from the second clamping piece, of the mounting frame, an opening penetrating through the outer wall of the first clamping piece is formed in the first clamping piece along the axial direction, one end of the ejection piece is inserted into the accommodating space through the opening, external force is applied to the mounting frame, the mounting frame is driven to slide relative to the mounting surface, and the ejection piece is abutted with the threaded sleeve and drives the threaded sleeve to be away from the first threaded surface.

6. The lancet holder of claim 5, wherein the limit bar is provided with at least two grooves on a side thereof away from the ejector, and the first positioning groove and the second positioning groove are located between the two adjacent grooves.

7. The lancet holder of claim 6, further comprising:

and one end of the limiting plate is arranged at the edge of the mounting frame, which is close to the side face of the mounting face, the other end of the limiting plate extends towards the direction, which is close to the mounting face, and is positioned between the opening end and the sealing end, and external force is applied to the limiting plate so as to drive the second clamping piece to be far away from the first clamping piece.

8. The lancet holder of claim 7, wherein the first threaded surface and the second threaded surface cooperate to form a threaded bore, the threaded bore being coaxial with the throughbore.

9. The lancet holder of claim 1, wherein the hand-held cartridge body has a cavity therein, the cavity having a circular cross-section, the cross-section of the cavity tapering in diameter from the open end to the closed end.

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

the side coaming is sleeved on the outer side of the opening end and extends along the radial direction of the handheld cylinder body in a direction away from the handheld cylinder body.