CN109394244B - Biased correcting and secondary puncture preventing blood sampling pen - Google Patents

Biased correcting and secondary puncture preventing blood sampling pen Download PDF

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Publication number
CN109394244B
CN109394244B CN201811415538.3A CN201811415538A CN109394244B CN 109394244 B CN109394244 B CN 109394244B CN 201811415538 A CN201811415538 A CN 201811415538A CN 109394244 B CN109394244 B CN 109394244B
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China
Prior art keywords
shooting
pen
rod
support surface
guide
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CN201811415538.3A
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CN109394244A (en
Inventor
施国平
安东尼·斯科特·霍斯特曼
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Sterilance Medical Suzhou Inc
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Sterilance Medical Suzhou Inc
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Priority to CN201811415538.3A priority Critical patent/CN109394244B/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/151Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/151Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101Details
    • A61B5/15126Means for controlling the lancing movement, e.g. 2D- or 3D-shaped elements, tooth-shaped elements or sliding guides

Abstract

The utility model provides a biasing is led and is just reached blood sampling pen of preventing secondary puncture, includes and penetrates pole and casing, and the casing comprises nib and a body, is equipped with in the body and launches the chamber, penetrates the pole and settles in this launches the chamber, penetrates to be equipped with between pole and the body to be used for the kayser structure of loading the locking and penetrating the pole and is used for the guide structure that the pole shooting was penetrated in the guide, its characterized in that: the guide structure is matched, an elastic sheet and a sliding support surface are designed between the shooting rod and the pen body, and a protrusion or/and a groove for speed reduction and buffering are/is designed on the sliding support surface. In a shooting rod shooting state, the elastic sheet is in sliding contact with the sliding support surface on one side, so that one side surface of the guide block is forced to be in contact with and in sliding fit with the corresponding side surface of the guide groove, and the shooting straightness is guaranteed; on the other hand, the elastic sheet and the bulge or/and the groove are in collision fit to play a role in buffering, so that the phenomenon of secondary puncture is effectively prevented.

Description

Biased correcting and secondary puncture preventing blood sampling pen
Technical Field
The invention relates to a medical blood taking instrument, in particular to a blood taking pen matched with a disposable blood taking needle. The blood sampling pen can provide the straightness of blood sampling shooting and can effectively prevent the occurrence of secondary puncture when in use.
Background
In a medical blood collection apparatus, a lancet is a blood collection device used in combination with a disposable lancet, wherein the lancet is reusable, and the lancet is disposable in order to avoid cross infection. The development of blood collection pens has been in the history of decades, and the improvement of blood collection pens has gone through many stages and is gradually mature.
A patent with application number 201420115833.8, entitled "blood sampling pen" was issued in 24 th of 09 months in 2014 by chinese patent CN 203841702U. The pen mainly comprises a pen cap, a pen holder, a shooting rod, a launching spring, a tail handle and the like. During the use, dismantle the pen cap and with disposable blood taking needle cartridge on the needle file of penetrating the pole front end from the pen stand, then adorn the pen cap and stimulate tail position hand and make and penetrate pole oppression transmission spring and go up the chamber and get into the locking state before the transmission, aim at the blood sampling position with the play pinhole of blood sampling pen during the blood sampling, press the transmission button, penetrate the pole and drive the blood taking needle shooting puncture under transmission spring's promotion, reach the blood sampling purpose. The blood sampling pen has the following defects in practical application: first, due to the limitation of the conventional guide structure (the guide rib is matched with the guide groove) between the shooting rod and the pen holder, the puncture during blood sampling cannot be guaranteed to have high shooting straightness, and therefore the pain during puncture cannot be effectively reduced. Secondly, the shooting process of the shooting rod driving the blood taking needle is a resonance process of gradually attenuating reciprocating motion in the blood taking pen, so that the condition of secondary puncture is easily caused, and unnecessary pain can be brought to a patient.
Therefore, how to design a blood sampling pen which has good shooting straightness and can prevent secondary puncture is the subject of the invention.
Disclosure of Invention
The invention provides a biased correcting and secondary puncture preventing blood sampling pen, and aims to solve the problems that the puncture effect and the pain are affected and the like caused by secondary puncture due to poor shooting straightness and easiness in causing of the conventional blood sampling pen.
In order to achieve the purpose, the invention adopts the technical scheme that: a biased guide and secondary puncture prevention blood sampling pen comprises a shooting rod and a shell.
The shooting rod is an emission part of the blood sampling pen, and the head of the shooting rod is provided with a needle seat for inserting a disposable blood sampling needle.
The casing is the nib and the body of blood sampling pen, wherein is equipped with in the body and launches the chamber, launches the pole and settles in this ejection chamber.
A locking structure used for loading and locking the shooting rod and a guide structure used for guiding the shooting rod to shoot are arranged between the shooting rod and the pen body.
The innovation lies in that: the guide structure is formed by matching a guide groove arranged on one of the shooting rod and the pen body with a guide block arranged on the other.
The guide structure is matched, one of the ejection rod and the pen body is provided with an elastic sheet, the other is provided with a sliding support surface, the sliding support surface is parallel to the shooting direction of the ejection rod, and the sliding support surface is provided with a bulge or/and a groove for speed reduction and buffering; under the shooting state of the shooting rod, the action end of the elastic sheet is in sliding contact with the sliding support surface, so that one side surface of the guide block is forced to be in contact with and in sliding fit with the corresponding side surface of the guide groove, and offset alignment is formed to ensure the straightness of shooting.
The relevant content in the above technical solution is explained as follows:
1. in the above-described embodiments, the "housing" is a generic term for a fixed (stationary) member relative to a movable member such as a shooting lever. In the invention, the 'shell' mainly refers to a pen point and a pen body part, the pen point can be a detachable pen cap or a non-detachable pen cap (the pen cap is not detachable, and the blood taking needle is directly inserted and assembled from a hole at the front end of the pen cap), and the pen body refers to a cap seat, a shell, a middle sleeve and other parts. In the structural design of the blood sampling pen, the cap seat, the shell, the middle sleeve and other parts can be designed into an integral structure or a split structure, which is determined by the structural requirement and manufacturability. Generally, since the internal structure of the lancet is relatively complicated, in order to facilitate the production of a mold, a designer in the art designs the housing as a separate structure and then assembles the housing to form a whole. The prior art of the shell of the split structure has shown a plurality of specific structural forms.
2. In the above scheme, one of the guide groove and the guide block in the guide structure can be arranged on the shooting rod, and the other can be arranged on the pen body. Two possible scenarios are included here: the first is that the guide block is arranged on the shooting rod, and the guide groove is arranged on the pen body; the second is that the guide block is arranged on the pen body, and the guide groove is arranged on the shooting rod.
3. In the above scheme, one of the elastic sheet and the sliding support surface can be arranged on the shooting rod, and the other can be arranged on the pen body. Two possible scenarios are included here: the first is that the elastic sheet is arranged on the shooting rod, and the sliding support surface is arranged on the pen body; the second is that the elastic sheet is arranged on the pen body and the sliding support surface is arranged on the shooting rod.
The design principle and the technical concept of the invention are as follows: referring to fig. 9-11, the blood sampling pen aims to solve the problems that the puncture effect and the pain are affected by the secondary puncture of the existing blood sampling pen due to poor shooting straightness and easiness in causing the secondary puncture. The invention is matched with the original guide structure, an elastic sheet and a sliding support surface are designed between the shooting rod and the pen body, and a bulge or/and a groove for speed reduction and buffering are/is designed on the sliding support surface. In a shooting rod shooting state, the elastic sheet is in sliding contact with the sliding support surface on one side, so that one side surface of the guide block is forced to be in contact with and in sliding fit with the corresponding side surface of the guide groove, and the shooting straightness is guaranteed; on the other hand, the elastic sheet and the bulge or/and the groove are in collision fit to play a role in buffering, so that the phenomenon of secondary puncture is effectively prevented.
Due to the application of the scheme, compared with the prior art, the invention has the following advantages and effects:
1. the invention utilizes the contact and sliding fit of the elastic sheet and the sliding support surface to force one side surface of the guide block to contact and slide fit with the corresponding side surface of the guide groove, thereby ensuring the straightness of shooting. The invention can improve the puncture effect and relieve the pain.
2. The invention can play a role of buffering by utilizing the impact fit of the elastic sheet and the bulge or/and the groove, thereby effectively preventing the phenomenon of secondary puncture.
3. The invention has reasonable design, simple structure and ingenious conception, has outstanding substantive characteristics and remarkable progress, and therefore has creativity.
4. The invention is suitable for various types of blood sampling pens, for example, the invention is not only suitable for the cap-detachable blood sampling pen, but also suitable for the non-detachable cap type blood sampling needle (the cap is not detachable, and the blood sampling needle is directly inserted into and assembled from a hole at the front end of the cap). For another example, the invention is not only suitable for the blood sampling pen with nonadjustable puncture depth, but also suitable for the blood sampling pen with adjustable puncture depth.
Drawings
FIG. 1 is an exploded perspective view of a lancet embodiment of the present invention;
FIG. 2 is a perspective view of a sheath in an embodiment of the lancing pen of the present invention;
FIG. 3 is a perspective view of another perspective of a sheath in an embodiment of a lancet of the present invention;
FIG. 4 is a perspective view of a shoot rod of an embodiment of the lancet of the present invention;
FIG. 5 is a perspective view of another perspective of a firing rod of an embodiment of the lancet of the present invention;
FIG. 6 is a front view of a lancet embodiment of the present invention showing the engagement of a plunger and a middle cap;
FIG. 7 is a cross-sectional view B-B of FIG. 6;
FIG. 8 is an enlarged left side view of FIG. 7;
FIG. 9 is a schematic diagram (I) of the matching between the ejection rod and the middle sleeve of the blood sampling pen of the present invention;
FIG. 10 is a schematic diagram (II) of the matching of the injection rod and the middle sleeve of the blood sampling pen;
FIG. 11 is a schematic diagram (III) of the matching between the ejection rod and the middle sleeve of the blood sampling pen of the invention;
FIG. 12 is a diagram of a state of the lancet pen of the present invention after being fired;
FIG. 13 is a state diagram illustrating the firing of the firing rod of the lancet pen of the present invention;
FIG. 14 is a view showing a retracted state of a firing rod after the lancet is fired according to an embodiment of the present invention;
FIG. 15 is a view showing a state in which the ejection rod is again advanced after the lancet is fired according to the embodiment of the present invention;
FIG. 16 is a view showing a state in which the movement of the shooting rod is stopped after the lancet is fired according to the embodiment of the present invention.
In the above drawings: 1. a pen cap; 2. a cap base; 3. shooting a rod; 4. a middle sleeve; 5. a firing spring; 6. unloading the needle rod; 7. a housing; 8. an inner sleeve; 9. a return spring; 10. a tail handle; 11. a buffer groove; 12. a launch button; 13. a guide groove; 14. a needle seat; 15. a locking spring arm; 16. a guide block; 17. an elastic sheet; 18. a blood collection needle; 19. a sliding support surface.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): biased correcting and secondary puncture preventing blood sampling pen
As shown in figures 1-8, the blood sampling pen consists of a pen cap 1, a cap base 2, a shooting rod 3, a middle sleeve 4, a launching spring 5, a needle removing rod 6, a shell 7, an inner sleeve 8, a return spring 9 and a tail handle 10 (shown in figure 1).
The pen cap 1 is a sleeve type cap of the head part of the blood sampling pen, the front end of the pen cap 1 is provided with a blood sampling end face used for contacting a blood sampling part of a human body, and the blood sampling end face is provided with a needle outlet hole. The cap base 2 is a base body (see 1) which is used for being connected and matched with the pen cap 1 at the front part of the blood sampling pen, and the pen cap 1 is connected with the cap base 2 in a matching way through a connecting port. The shooting rod 3 is a launching part of a blood sampling pen, a needle seat 14 (see fig. 4 and 5) for inserting a disposable blood sampling needle 18 is arranged at the head of the shooting rod 3, a locking elastic arm 15 (see fig. 4) is arranged on the shooting rod 3, and the locking elastic arm 15 and a buckle (see fig. 12 and not marked) on the middle sleeve 4 are matched to form a clamping and locking structure for loading and locking the shooting rod 3. The middle sleeve 4 is a housing part located at the rear of the cap 2 (see fig. 2 and 3), and the firing button 12 is designed on the middle sleeve 4 (see fig. 2). An ejection cavity is arranged in the cap base 2 and the middle sleeve 4, and the ejection rod 3 is arranged in the ejection cavity. The launching spring 5 acts on the shooting rod 3 as a power element for shooting and puncturing the blood sampling pen. The needle discharging rod 6 is used for discharging a needle after being used (see figure 1), and the return spring 9 is a spring which acts on the needle discharging rod 6 to return the needle after being discharged. The outer shell 7 is attached to the middle sleeve 4 as part of the housing. The inner sleeve 8 is fixedly sleeved with the tail handle 10 and is used for loading the shooting rod 3.
The invention is characterized in that a structure capable of guiding the shooting and preventing secondary puncture is designed in the blood sampling pen. The specific contents are as follows:
a guide structure for guiding the shooting rod 3 to shoot is arranged between the shooting rod 3 and the middle sleeve 4. The guide structure is formed by matching guide blocks 16 (see figures 4 and 5) arranged at the left and right sides of the ejection rod 3 with guide grooves 13 arranged at the left and right sides of the ejection cavity of the middle sleeve 4 when viewed from the cross section of the blood sampling pen (see figure 8). The guide block 16 and the guide groove 13 can also be seen in fig. 7.
In cooperation with the above-mentioned guide structure, an elastic sheet 17 and a sliding support surface 19 are further provided between the shooting rod 3 and the middle sleeve 4. The elastic piece 17 is arranged on the side part of the ejection rod 3 (see fig. 4 and 5), and the sliding support surface 19 is arranged on the inner wall of the pen body ejection cavity (see fig. 9-11). In the cross section of the lancet (see fig. 8), the elastic piece 17 and the sliding support surface 19 are located at the bottom of the shooting rod 3. The elastic piece 17 is an elastic suspension arm, the tail end of the elastic suspension arm is provided with a bend or an arc section, and the back surface of the bend or the arc section is in sliding contact with the sliding support surface 19. The sliding support surface 19 is parallel to the shooting direction of the shooting rod 3, and a groove 11 for speed reduction and buffering is arranged on the sliding support surface 19 (see figure 12). In the shooting state of the shooting rod 3, on one hand, the elastic piece 17 forces the top surface of the guide block 16 to contact and slide-fit with the top surface of the guide groove 13, so as to form offset alignment and ensure the straightness of shooting; on the other hand, the action end of the elastic sheet 17 is in collision fit with the groove 11 to play a role in buffering, and the phenomenon of secondary puncture is effectively prevented.
In order to better understand the relative positions and relationships among the components of the invention, the blood sampling pen of the invention is described in combination with the use state as follows:
1. structure and principle of the invention
Fig. 9-11 are schematic diagrams of the matching of the ejection rod and the middle sleeve of the blood sampling pen. The relative positions and relationships between the key features of the present invention can be more clearly seen in fig. 9-11.
2. State of waiting to be transmitted
FIG. 12 shows a state diagram of a lancet of the present invention ready for firing. The relative positions and relationships between the components in the ready-to-fire condition can be seen in figure 12. In a state of waiting to be launched, the guide blocks 16 on both sides of the shooting rod 3 are placed in the guide grooves 13 of the middle sleeve 4 (not shown in fig. 12, see fig. 8), and at this time, the elastic sheet 17 at the bottom of the shooting rod 3 contacts with the sliding support surface 19 arranged on the inner wall of the middle sleeve 4 (with a small interference amount), so that the shooting rod 3 is slightly lifted, and the top surfaces of the guide blocks 16 on both sides of the shooting rod 3 are made to be attached to the top surface of the guide grooves 13 in the middle sleeve 4.
3. Shooting state of shooting rod
FIG. 13 is a view showing a state in which the ejection lever of the lancet of the present invention is fired. The relative positions and relationships between the various components in the firing state of the shooting rod can be seen in fig. 13. When the firing button 12 is pressed (arrow in fig. 13), the locking elastic arm 15 is buckled with the middle sleeve 4 to be separated polished, the shooting rod 3 moves leftwards under the action of the firing spring 5, the elastic sheet 17 at the bottom of the shooting rod 3 is always contacted with the sliding support surface 19 at the bottom of the middle sleeve 4 in the motion process, and the top surfaces of the guide blocks 16 at the two sides of the shooting rod 3 are enabled to be attached to and in sliding fit with the top surface of the guide groove 13, so that the straightness of the shooting rod 3 during firing is ensured.
4. Retreating state of shooting rod after shooting
FIG. 14 is a view showing a retracted state of a firing rod after the lancet is fired according to an embodiment of the present invention. The relative positions and relationships between the parts in the retracted state of the firing rod after firing can be seen in FIG. 14. Under the action of the return spring 9, the shooting rod 3 moves rightwards, and at the moment, the elastic sheet 17 at the bottom of the shooting rod 3 falls into the groove 11 at the bottom of the middle sleeve 4 to absorb the energy generated when the shooting rod 3 moves rightwards.
5. Shooting rod forward again after shooting
FIG. 15 shows a view of the ejection rod again advanced after firing of an embodiment of the lancet of the present invention. The relative positions and relationships of the parts in the post-firing ram thrust forward again can be seen in fig. 15. In this state, the shooting rod 3 moves leftwards again under the action of the launching spring 5, but the energy of the leftward movement of the shooting rod 3 is basically consumed when the shooting rod 3 is in a retraction state, and the shooting rod 3 cannot drive the blood taking needle 18 to realize puncture, so that the effect of preventing secondary puncture is achieved.
6. Stopping state of shooting rod after shooting
FIG. 16 is a view showing a state in which the movement of the shooting rod is stopped after the lancet is fired according to the embodiment of the present invention. The relative positions and relationships of the parts in the state where the firing rod stops moving can be seen in fig. 16. In this state, the shooting lever 3 stays at the equilibrium position (initial state).
With respect to the above embodiments, possible variations of the present invention are described below:
1. in the above embodiment, the elastic piece 17 is provided on the shooting rod 3, and the sliding support surface 19 is provided on the middle cover 4. However, the present invention is not limited thereto, and the elastic piece 17 may be provided on the middle sleeve 4 and the sliding support surface 19 may be provided on the injection rod 3, as will be understood by those skilled in the art.
2. In the above embodiment, the elastic piece 17 is an elastic suspension arm. However, the present invention is not limited to this, and the elastic piece 17 may be designed as an arched elastic piece, the arched portion of the arched elastic piece serves as an acting portion, and both ends of the arched elastic piece serve as fixed ends, as will be understood by those skilled in the art.
3. In the above embodiment, the number of the grooves 11 is one. The present invention is not limited thereto and the grooves 11 are composed of at least one in number. Furthermore, the groove 11 may be designed as a trapezoidal groove, and the two sides of the trapezoidal groove may be equal or different, as will be understood by those skilled in the art.
4. In the above embodiment, the deceleration buffer employs the groove 11. The present invention is not limited thereto, but a protrusion, or a combination of a protrusion and a groove 11 may be used. The number of the protrusions of the deceleration buffer is at least one, and the surface of the protrusions can be a circular arc surface or other shapes, which can be understood by those skilled in the art.
5. In the above embodiment, the guide block 16 is provided on the shooting rod 3, and the guide groove 13 is provided on the middle sleeve 4. However, the present invention is not limited thereto, and the positions of the guide block 16 and the guide groove 13 may be exchanged, that is, the guide block 16 is formed on the middle sleeve 4 and the guide groove 13 is formed on the shooting rod 3, as will be understood by those skilled in the art.
6. In the above embodiment, the locking elastic arm 15 cooperates with a catch (see fig. 12, not labeled) on the middle sleeve 4 to form a latch structure. However, the invention is not limited thereto, and the innovative points of the invention are independent of the latch structure, so that the invention is suitable for blood sampling pens with various types of latch structures, as can be understood by those skilled in the art.
7. In the above embodiments, the blood sampling pen is a detachable cap type blood sampling pen, and the innovative point of the present invention is that the form of the pen cap is not enough, so the present invention is also suitable for a non-detachable cap type blood sampling needle (the pen cap is not detachable, and the blood sampling needle is directly inserted into and assembled from a hole at the front end of the pen cap). It is inferred that the invention is not only applicable to the blood sampling pen with the non-adjustable puncture depth, but also applicable to the blood sampling pen with the adjustable puncture depth, which can be understood by the technical personnel in the field.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A biased guide and secondary puncture prevention blood sampling pen comprises a shooting rod (3) and a shell;
the shooting rod (3) is an emission part of the blood sampling pen, and the head part of the shooting rod (3) is provided with a needle seat (14) for inserting a disposable blood sampling needle (18);
the shell is a pen point and a pen body of the blood sampling pen, wherein an ejection cavity is arranged in the pen body, and the ejection rod (3) is arranged in the ejection cavity;
a locking structure for loading the shooting rod (3) and a guide structure for guiding the shooting rod (3) to shoot are arranged between the shooting rod (3) and the pen body;
the method is characterized in that: the guide structure is formed by matching a guide groove (13) arranged on one of the shooting rod (3) and the pen body with a guide block (16) arranged on the other;
the elastic sheet (17) is arranged on one of the shooting rod (3) and the pen body and the sliding support surface (19) is arranged on the other of the shooting rod (3) and the pen body in cooperation with the guide structure, the sliding support surface (19) is parallel to the shooting direction of the shooting rod (3), and the sliding support surface (19) is provided with a bulge or/and a groove (11) for speed reduction and buffering; in the shooting state of the shooting rod (3), the action end of the elastic sheet (17) is in sliding contact with the sliding support surface (19), so that one side surface of the guide block (16) is forced to be in contact with and in sliding fit with the corresponding side surface of the guide groove (13), and offset alignment is formed to ensure the shooting straightness.
2. The lancing pen according to claim 1, wherein: the elastic piece (17) is arranged on the shooting rod (3), and the sliding support surface (19) is arranged on the pen body.
3. The lancing pen according to claim 2, wherein: the elastic piece (17) is arranged on the side part of the ejection rod (3), and the sliding support surface (19) is arranged on the inner wall of the pen body ejection cavity.
4. The lancing pen according to claim 1, wherein: the elastic piece (17) is arranged on the pen body, and the sliding support surface (19) is arranged on the shooting rod (3).
5. The lancing pen according to claim 4, wherein: the elastic piece (17) is arranged on the inner wall of the pen body ejection cavity, and the sliding support surface (19) is arranged on the side part of the ejection rod (3).
6. The lancing pen according to claim 1, wherein: the elastic piece (17) is an elastic suspension arm, the tail end of the elastic suspension arm is provided with a bent or circular arc section, and the back surface of the bent or circular arc section is in sliding contact with the sliding support surface (19).
7. The lancing pen according to claim 1, wherein: the elastic piece (17) is an arched elastic piece, an arched part of the arched elastic piece is used as an acting part, and two ends of the arched elastic piece are used as fixed ends.
8. The lancing pen according to claim 1, wherein: the speed reduction buffering bulge is composed of at least one bulge, and the surface of the bulge is an arc surface.
9. The lancing pen according to claim 1, wherein: the groove (11) of the deceleration buffer is at least composed of one groove.
10. The lancing pen according to claim 1, wherein: the guide structure is formed by matching guide blocks (16) arranged on the left side and the right side of the ejection rod (3) with guide grooves (13) arranged on the left side and the right side of the ejection cavity of the pen body on the cross section of the blood sampling pen; the elastic sheet (17) is arranged on the side part of the shooting rod (3), the sliding support surface (19) is arranged on the inner wall of the pen body ejection cavity, the elastic sheet (17) and the sliding support surface (19) are both positioned at the bottom of the shooting rod (3) on the cross section of the blood sampling pen, and the elastic sheet (17) forces the top surface of the guide block (16) to be in contact with and in sliding fit with the top surface of the guide groove (13) in the shooting state of the shooting rod (3), so that offset guide is formed to ensure the shooting straightness.
CN201811415538.3A 2018-11-26 2018-11-26 Biased correcting and secondary puncture preventing blood sampling pen Active CN109394244B (en)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
CN111214241A (en) * 2019-05-12 2020-06-02 天津华鸿科技股份有限公司 Blood sampling pen
CN110464363A (en) * 2019-07-25 2019-11-19 淮安市天达医疗器械有限公司 Reduce the blood collecting pen for puncturing pain

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CN101856231A (en) * 2006-03-08 2010-10-13 爱科来株式会社 Lancet device
JP5028414B2 (en) * 2006-05-10 2012-09-19 パナソニック株式会社 Puncture device and puncture needle cartridge
CN102178538B (en) * 2011-06-07 2013-05-01 天津九安医疗电子股份有限公司 Blood drawing pen
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