CN111214244B - Blood taking needle and blood taking pen with same - Google Patents
Blood taking needle and blood taking pen with same Download PDFInfo
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- CN111214244B CN111214244B CN201910874426.2A CN201910874426A CN111214244B CN 111214244 B CN111214244 B CN 111214244B CN 201910874426 A CN201910874426 A CN 201910874426A CN 111214244 B CN111214244 B CN 111214244B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
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- Hematology (AREA)
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- Animal Behavior & Ethology (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention relates to a blood lancet, comprising: a needle handle having a first end and a second end; the needle body, a part of the needle body is located in the first end of the needle handle, and the needle point of the needle body is located outside the first end of the needle handle; a needle cap having a first end and a second end, the second end of the needle cap being provided with a first needle covering portion which removably covers the needle tip, wherein: the needle cap is further provided with a second needle covering portion at a position different from the first needle covering portion, the second needle covering portion being adapted to cover the needle tip after the needle cap is removed from the needle tip. The first end of the needle cap is provided with a second needle covering portion. The second needle covering portion includes a boss having a predetermined height, and the needle tip is adapted to be inserted into the boss along a central axis of the boss. The invention also relates to a blood taking pen with the blood taking needle.
Description
Technical Field
The embodiment of the invention relates to the field of medical instruments, in particular to a blood taking needle and a blood taking pen with the same.
Background
The existing blood sampling pen is used and then the blood sampling pen is treated, the used blood sampling pen is required to remove the pen cap and the needle tip part of the blood sampling needle is completely exposed, or the blood sampling needle is moved out of the pen cap under the state that the pen cap is not removed, then the needle tip is covered by the needle cap and the blood sampling needle is discarded, and the user is easily scratched accidentally in the process.
Disclosure of Invention
The present invention has been made to mitigate or solve at least one of the above-mentioned problems.
According to an aspect of an embodiment of the present invention, there is provided a lancet including:
a needle handle having a first end and a second end;
a part of the needle body is positioned in the first end of the needle handle, and the needle point of the needle body is positioned outside the first end of the needle handle;
a needle cap having a first end and a second end, the second end of the needle cap being provided with a first needle covering portion that removably covers the needle tip,
wherein:
the needle cap is further provided with a second needle covering portion adapted to cover the needle tip after the needle cap is removed from the needle tip, at a position different from the first needle covering portion.
Optionally, the first end of the needle cap is provided with a second needle covering portion.
Optionally, the second needle covering portion is a needle insertion portion adapted to be retained on the needle tip upon insertion by the needle tip.
Optionally, the pin portion includes a boss having a predetermined height, and the needle tip is adapted to be inserted into the boss along a central axis of the boss.
Optionally, the boss is a cylindrical boss or a conical boss.
Optionally, the second needle covering portion is a socket portion, and the socket portion defines an accommodation space; the first end of needle handle is provided with cup joints cooperation portion, cup joint cooperation portion be suitable for with cup joint portion cooperation is connected and makes the needle point is located accommodation space.
Optionally, the socket has a bottom wall into which the needle tip entering the receiving space is adapted to be at least partially inserted.
Optionally, the side wall portion of the receiving space defined by the socket portion has elasticity, and an end portion of the side wall portion has a protrusion portion facing radially inwards; the sleeve joint matching part is provided with a radial bulge, and the radial bulge is suitable for being in buckle connection with the protruding part.
Optionally, the sidewall part of the receiving space defined by the socket part is elastic and is provided with circumferentially distributed circumferential recesses in the receiving space; the socket fitting portion comprises circumferentially distributed radial protrusions adapted to fit into the circumferential recess.
Optionally, the central axis of the second needle covering portion coincides with the axis of a needle body provided in the needle handle.
Optionally, the central axis of the second needle covering portion is perpendicular to the axis of the needle body disposed in the needle handle.
According to another aspect of an embodiment of the present invention, there is provided a lancet having a needle outlet, the lancet comprising the above lancet, wherein: the second needle covering portion is adapted to be inserted into the needle outlet to cover the needle tip.
Optionally, the axial distance between the needle point after blood collection and the outer end face of the needle outlet is within the range of 0.5mm-1.5 mm.
Optionally, the second end of the needle cap is provided with a flange part on one side of the matching part far away from the needle tip, and the diameter of the flange part is larger than the matching diameter; the central axis of the boss is vertical to the axis of the needle body arranged in the needle handle; and a radial distance between the flange portion and the needle tip is not less than a radial distance between the needle tip and a radially outer wall surface of an end portion of the lancet defining a needle outlet, in a state where the second needle covering portion covers the needle tip.
Optionally, the cap of the blood sampling pen is provided with the needle outlet, and the needle outlet simultaneously forms a needle returning opening for the blood sampling needle to exit.
Drawings
FIGS. 1-1 to 1-3 are schematic views of a cap of a lancet pen according to an exemplary embodiment, in which FIG. 1-1 is a front view, FIG. 1-2 is a sectional view taken along the line A-A in FIG. 1-1, and FIG. 1-3 is a perspective view;
FIGS. 2-1 to 2-2 are schematic views of a guide sleeve of a lancet pen according to an exemplary embodiment, FIG. 2-1 is a front view partially in section, and FIG. 2-2 is a sectional view taken along A-A in FIG. 2-1;
FIGS. 3-1 to 3-3 are schematic views of a hub of a lancet pen according to an exemplary embodiment, FIG. 3-1 is a front view, FIG. 3-2 is a sectional view taken along line A-A of FIG. 3-1, and FIG. 3-3 is a perspective view;
FIG. 4 is a schematic view of a return spring;
FIG. 5 is a schematic view of a lancet according to an exemplary embodiment of the present invention;
FIG. 6 is a cross-sectional view of a lancet according to an exemplary embodiment of the present invention, with the lancet of FIG. 5 disposed therein in a state in which the cap is not removed, wherein the lancet shows the lancet, the needle hub, the guide sleeve, the cap, and the return spring, and does not show other components of the lancet;
FIG. 7 shows a cross-sectional view of the lancet of FIG. 6 with the needle cap removed in an armed state;
FIG. 8 is a sectional view of the lancet pen of FIG. 7 after blood collection, in which a boss of a needle cap is inserted into a needle outlet to cover a needle tip;
FIG. 9 is a schematic view of a lancet according to an exemplary embodiment of the present invention;
FIG. 10 is a cross-sectional view of the lancet of FIG. 9;
FIG. 11 is a schematic view showing a structure in which a second needle covering portion is provided to a needle tip after the needle cap is removed from the lancet of FIG. 9.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Referring to the drawings, a cap 10 of a lancet includes a needle outlet 11 for attaching and detaching a lancet 50 and allowing a lancet tip 53 to pass therethrough; and a spring limiting rib 12 which limits the circumferential displacement of the spring 40 through an accommodating space between the spring limiting rib and the inner wall of the pen cap. The end surface 14 contacts with a first limit surface 22 (see fig. 2-1) of the guide sleeve 20 to limit the axial position between the cap 10 and the guide sleeve 20.
Referring to fig. 3-1 to 3-2, the hub 30 of the lancet comprises: the hub groove 31 is used to mount the lancet 50. The third limiting surface 32 of the needle seat 30 is matched with the second limiting surface 23 of the guide sleeve 20 to abut against the needle seat 30 so as not to axially retreat.
The guide rib 34 of the needle holder 30 is inserted into the guide sleeve 20 along the guide groove 24 of the guide sleeve 20, and plays a role of guiding when the needle holder 30 is activated.
The pen cap 10 and the guide sleeve 20 are fixedly connected through the matching groove 13 of the pen cap and the matching rib 21 of the guide sleeve.
As shown in fig. 7, the spring 40 is axially controlled between the front end surface 15 of the pen cap 10 and the fourth limiting surface 33 of the needle seat 30; the spring 40 may be in a free state or a pre-stressed state as long as it is ensured that the needle holder 30 receives the elastic force of the spring 40 when not excited so that the lancet tip 53 is not exposed from the needle outlet 11.
The lancet 50 according to an exemplary embodiment of the present invention will be described in detail with reference to fig. 5 to 8.
As shown in fig. 5, the lancet 50 includes: a needle body; a needle handle 52 to which the needle body is fixed and from which a needle tip 53 is exposed at a first end (e.g., the left end in fig. 7) thereof, a second end of which is adapted to be inserted into the needle holder groove 31 of the needle holder 30; and a needle cap 51 which is removable to expose the needle tip 53.
As shown in fig. 5, the needle cap 51 is provided with a boss 54, one end of the boss 54 is provided with a blind hole 55 with the depth of 1mm, for example, when the blind hole wraps the needle tip of the blood taking needle, a part of the needle tip can be suspended, and the resistance when the needle tip is inserted into the needle cap is reduced. The needle cap 51 is also provided with a plurality of sections of cylinder shapes with different external diameters, wherein the matching parts 57 and the needle outlet have the same diameter and are used for preventing or reducing the shaking of the blood taking needle when the blood taking needle is inserted into the needle seat groove; the diameter of the flange part 56 is larger than that of the needle outlet, and the longitudinal position of the flange part just allows the blood taking needle to be placed in the needle seat groove, so that the effects of limiting and prompting the installation of the blood taking needle are achieved.
After the blood collection is completed, the boss 54 is pushed through the needle outlet 11, and the needle tip 53 of the blood collection needle is covered with the boss 54. Since the needle holder 30 is supported by the pressure of the spring 40 and the second stopper surface 23 of the guide sleeve 20 in any non-excited state, the distance from the needle point 53 of the lancet to the needle outlet 11 is constant, for example, in the range of 0.5mm to 1.5mm, for example, 0.5mm, 1mm and 1.5mm, the height of the boss 54 is in the range of 2.5mm to 3.5mm, for example, 2.5mm, 3mm and 3.5mm, and if the wall thickness of the front end of the cap 10 is neglected, if the distance from the needle point 53 of the lancet to the needle outlet 11 is 1mm, the height of the boss 54 is 3mm, the needle point 53 will be covered by 2 mm. And then, the blood taking needle is withdrawn through the needle withdrawing key and is abandoned, or the needle cap is designed into a special structure and is directly pulled to draw out the blood taking needle and is abandoned.
In the lancet shown in fig. 5 to 8, a boss 54 is provided, and the boss 54 has a predetermined height so as to be inserted into the needle outlet to cover the needle tip. The shape of the projection 54 is not particularly limited as long as it can be inserted into the needle outlet to cover the needle tip. However, in particular embodiments, the boss 54 may be a cylindrical or conical boss.
In the illustrated example, the boss 54 is provided with a blind hole 55, and the boss may not be provided with a blind hole as long as the needle tip can be inserted to cover the needle tip.
As shown in fig. 5, the needle cap 51 is provided with a large diameter portion 58 disposed substantially coaxially with the boss 54, the diameter of the large diameter portion 58 being larger than the diameter of the boss 54.
In the examples of fig. 5-8, the axis of the boss is perpendicular to the axis of the needle tip, but the invention is not so limited. As long as the boss is arranged on the needle cap, the boss can be inserted into the needle outlet to cover the needle point. The boss is specifically positioned and may be disposed at the first end of the needle cap as shown.
In the case where the fitting portion 57 is provided as described above, the diameter of the boss 54 should be not larger than the diameter of the fitting portion 57 so that the boss 54 is inserted into the needle outlet.
As shown in fig. 8, in the case where the boss 54 covers the needle tip 53, the radial distance between the flange portion and the needle tip is not smaller than the radial distance between the needle tip and the radially outer wall surface of the cap. In other words, in fig. 8, the flange portion 56 in fig. 5 may be located at a side surface of the cap instead of being abutted by an end surface of the cap.
It should be noted that, in the present invention, the boss is not limited to a solid body (the needle tip is required to be inserted into the boss), but may be a barrel body (the barrel body is housed so that the needle tip is not exposed).
In the exemplary embodiment of the present invention, the needle cap of the lancet is provided to be fitted to the needle handle again after the needle cap is removed from the needle body, taking the boss 54 as an example, but the present invention is not limited thereto.
See, for example, fig. 9-11, which illustrate embodiments in which a removed needle cap is re-attached to a needle body or needle handle in a telescoping fashion.
As shown in fig. 9-11, the needle cap 51 is provided with a socket 54, the wall of the socket 54 defining the receiving space S being elastic and provided with circumferentially distributed circumferential recesses 59a in the receiving space; the first end of the needle shaft is provided with a socket fitting portion 59b, said socket fitting portion 59b comprising circumferentially distributed radial protrusions adapted to fit into said circumferential recess, as shown in fig. 11.
In fig. 10, the socket 54 has a bottom wall into which the needle tip entering the receiving space may be adapted to be at least partially inserted.
The lancet shown in fig. 9-11 may be provided to a lancet as shown in fig. 6-8.
It should be noted that the connection between the socket part and the socket mating part is not limited to the examples shown in fig. 9-11, and the socket mating part is suitable for mating connection with the socket part so that the needle tip is located in the accommodating space. In the present invention, the sleeving means that one portion is contained by the other portion in a direction parallel to the axis of the lancet, and the other portion for containment may be an annular wall or a plurality of extension arms spaced in the circumferential direction and extending in the axial direction. For example, although not shown, the sidewall portion of the socket portion defining the receiving space has elasticity, and an end portion of the sidewall portion has a radially inward protrusion; the sleeve joint matching part is provided with a radial bulge, and the radial bulge is suitable for being in buckle connection with the protruding part. All of the above are within the scope of the present invention.
As can be appreciated by those skilled in the art, the cap of the lancet may be provided with a needle outlet. Under the condition that the pen cap is not removed during withdrawing the needle, the needle outlet forms a needle withdrawing hole.
Based on the above, the invention provides the following technical scheme:
1. a blood collection needle comprising:
a needle handle having a first end and a second end;
the needle body, a part of the needle body is located in the first end of the needle handle, and the needle point of the needle body is located outside the first end of the needle handle;
a needle cap having a first end and a second end, the second end of the needle cap being provided with a first needle covering portion that removably covers the needle tip,
wherein:
the needle cap is further provided with a second needle covering portion adapted to cover the needle tip after the needle cap is removed from the needle tip, at a position different from the first needle covering portion.
2. The lancet according to 1, wherein:
the first end of the needle cap is provided with a second needle covering portion.
3. The lancet according to 1 or 2, wherein:
the second needle covering portion is a needle insertion portion adapted to be held on the needle tip upon insertion by the needle tip.
4. The lancet of claim 3, wherein:
the pin insertion part comprises a boss with a preset height, and the needle point is suitable for being inserted into the boss along the central axis of the boss.
5. The lancet of claim 4, wherein:
the boss is a cylindrical boss or a conical boss.
6. The lancet of claim 4, wherein:
the needle cap is provided with a large diameter portion arranged substantially coaxially with the boss, and the diameter of the large diameter portion is larger than that of the boss.
7. The lancet of claim 4, wherein:
the second end of the needle cap is provided with a matching part, the matching part has a matching diameter suitable for being matched with a needle outlet of a blood sampling pen, the second end of the needle cap is provided with a first needle covering part at one side of the matching part close to the needle point, and the needle point is inserted into the first needle covering part; and is
The maximum diameter of the boss is not greater than the fitting diameter of the fitting portion.
8. The lancet of claim 7, wherein:
the second end of the needle cap is provided with a flange part on one side of the matching part far away from the needle point, and the diameter of the flange part is larger than the matching diameter.
9. The lancet of claim 4, wherein:
the end of the boss is provided with a blind hole.
10. The lancet of claim 4, wherein:
the predetermined height of the boss is in the range of 2.5mm-3.5 mm.
11. The lancet according to 1 or 2, wherein:
the second needle covering portion is a sleeve portion defining an accommodation space;
the first end of the needle handle is provided with a sleeving matching part, and the sleeving matching part is suitable for being matched and connected with the sleeving part so that the needle point is located in the accommodating space.
12. The lancet of claim 11, wherein:
the socket has a bottom wall into which the needle tip entering the receiving space is adapted to be at least partially inserted.
13. The lancet of claim 11, wherein:
the side wall part of the socket part for limiting the accommodating space has elasticity, and the end part of the side wall part is provided with a protrusion part which is inward in the radial direction;
the sleeve joint matching part is provided with a radial bulge, and the radial bulge is suitable for being in buckle connection with the protruding part.
14. The lancet of claim 11, wherein:
the side wall part of the socket joint part for limiting the accommodating space is elastic and is provided with circumferentially distributed circumferential depressions positioned in the accommodating space;
the socket fitting portion comprises circumferentially distributed radial protrusions adapted to fit into the circumferential recess.
15. The blood collection needle according to any one of claims 1 to 14, wherein:
the central axis of the second needle covering part is superposed with the axis of the needle body arranged in the needle handle.
16. The blood collection needle according to any one of claims 1 to 14, wherein:
the central axis of the second needle covering part is vertical to the axis of the needle body arranged in the needle handle.
17. A lancet having a needle outlet, comprising a lancet according to any one of claims 1 to 16, wherein:
the second needle covering portion is adapted to be inserted into the needle outlet to cover the needle tip.
18. The lancet of claim 17, wherein:
the axial distance between the needle point and the outer end face of the needle outlet after blood collection is within the range of 0.5mm-1.5 mm.
19. The lancet of claim 17, wherein:
the second end of the needle cap is provided with a flange part at one side of the matching part far away from the needle point, and the diameter of the flange part is larger than the matching diameter;
the central axis of the boss is vertical to the axis of the needle body arranged in the needle handle; and is provided with
In a case where the second needle covering portion covers the needle tip, a radial distance between the flange portion and the needle tip is not less than a radial distance between the needle tip and a radially outer wall surface of an end portion of the lancet defining a needle outlet.
20. The lancet pen of any one of claims 17-19, wherein:
the cap of the blood sampling pen is provided with the needle outlet, and the needle outlet simultaneously forms a needle returning opening for the blood sampling needle to withdraw.
In the present invention, registration includes not only registration, but also substantial registration, such as where the two axes are parallel but spaced apart by less than 2mm, and such as where the angle between the two axes is less than 20 degrees.
In the present invention, the perpendicular includes not only the perpendicular case but also the substantially perpendicular case, for example, the included angle between the two axes is within a range of 20 degrees from 90 degrees.
The attached drawing of the invention shows a blood taking needle, a needle base, a guide sleeve, a return spring and a pen cap of the blood taking pen. It is noted that, in the present invention, the needle cap of the lancet is provided with an additional second needle covering portion for covering the needle tip by being additionally inserted into the needle outlet after the needle cap is removed, in addition to the first needle covering portion removably connected to the needle tip. Therefore, as can be understood by those skilled in the art, in the case where it is possible to realize the covering of the needle tip after blood collection using the second needle covering portion of the needle cap, not all the illustrated components are to be included in the aspect of the present invention as the blood collecting function of the blood collecting pen is maintained.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (20)
1. A blood collection needle comprising:
a needle handle having a first end and a second end;
the needle body, a part of the needle body is located in the first end of the needle handle, and the needle point of the needle body is located outside the first end of the needle handle;
a needle cap having a first end and a second end, the second end of the needle cap being provided with a first needle covering portion that removably covers the needle tip,
wherein:
the needle cap is further provided with a second needle covering portion at a position different from the first needle covering portion, the second needle covering portion being adapted to cover the needle tip after the first needle covering portion of the needle cap is removed from the needle tip;
the blood taking needle is used for a blood taking pen, and after the blood taking operation is carried out, the needle tip is positioned in a needle outlet of the blood taking pen;
the second needle covering portion is adapted to be inserted into the needle outlet to cover a needle tip, so as to be adapted to withdraw the lancet out of the lancet pen to be discarded.
2. The blood collection needle according to claim 1, wherein:
the first end of the needle cap is provided with a second needle covering portion.
3. The lancet of claim 1, wherein:
the second needle covering portion is a needle insertion portion adapted to be held on the needle tip upon insertion by the needle tip.
4. The blood collection needle according to claim 3, wherein:
the pin inserting part comprises a boss with a preset height, and the needle point is suitable for being inserted into the boss along the central axis of the boss.
5. The lancet of claim 4, wherein:
the boss is a cylindrical boss or a conical boss.
6. The blood collection needle according to claim 4, wherein:
the needle cap is provided with a large diameter portion arranged substantially coaxially with the boss, and the diameter of the large diameter portion is larger than that of the boss.
7. The blood collection needle according to claim 4, wherein:
the second end of the needle cap is provided with a matching part, the matching part has a matching diameter suitable for being matched with a needle outlet of a blood sampling pen, the second end of the needle cap is provided with a first needle covering part at one side of the matching part close to the needle point, and the needle point is inserted into the first needle covering part; and is
The maximum diameter of the boss is not greater than the fitting diameter of the fitting portion.
8. The blood collection needle according to claim 7, wherein:
the second end of the needle cap is provided with a flange part on one side of the matching part far away from the needle point, and the diameter of the flange part is larger than the matching diameter.
9. The blood collection needle according to claim 4, wherein:
the end of the boss is provided with a blind hole.
10. The blood collection needle according to claim 4, wherein:
the predetermined height of the boss is in the range of 2.5mm-3.5 mm.
11. The lancet of claim 1, wherein:
the second needle covering portion is a socket portion defining an accommodation space;
the first end of the needle handle is provided with a sleeving matching part, and the sleeving matching part is suitable for being matched and connected with the sleeving part so that the needle point is located in the accommodating space.
12. The blood collection needle of claim 11, wherein:
the socket has a bottom wall into which a needle tip entering the receiving space is adapted to be at least partially inserted.
13. The blood collection needle of claim 11, wherein:
the side wall part of the socket part for limiting the accommodating space has elasticity, and the end part of the side wall part is provided with a protrusion part which is inward in the radial direction;
the sleeve joint matching part is provided with a radial bulge, and the radial bulge is suitable for being in buckle connection with the protruding part.
14. The blood collection needle of claim 11, wherein:
the side wall part of the socket joint part for limiting the accommodating space has elasticity and is provided with circumferentially distributed circumferential depressions positioned in the accommodating space;
the socket fitting portion comprises circumferentially distributed radial protrusions adapted to fit into the circumferential recess.
15. The blood lancet according to any one of claims 1 to 14, wherein:
the central axis of the second needle covering part is superposed with the axis of the needle body arranged in the needle handle.
16. The blood lancet according to any one of claims 1 to 14, wherein:
the central axis of the second needle covering part is vertical to the axis of the needle body arranged in the needle handle.
17. A lancet having a needle outlet, the lancet comprising the lancet according to any one of claims 1 to 16, wherein:
the second needle covering portion is adapted to be inserted into the needle outlet to cover the needle tip.
18. The lancet of claim 17, wherein:
the axial distance between the needle point and the outer end face of the needle outlet after blood collection is within the range of 0.5mm-1.5 mm.
19. The lancet of claim 17, wherein:
the first end of the needle cap is provided with a second needle covering part which is a needle inserting part, and the needle inserting part is suitable for being kept on the needle point based on being inserted by the needle point;
the needle inserting part comprises a boss, the second end of the needle cap is provided with a matching part, and the matching part has a matching diameter suitable for being matched with a needle outlet of a blood sampling pen;
the second end of the needle cap is provided with a flange part on one side of the matching part far away from the needle point, and the diameter of the flange part is larger than the matching diameter;
the central axis of the boss is vertical to the axis of the needle body arranged in the needle handle; and is
In a case where the second needle covering portion covers the needle tip, a radial distance between the flange portion and the needle tip is not less than a radial distance between the needle tip and a radially outer wall surface of an end portion of the lancet defining a needle outlet.
20. The lancet of any one of claims 17-19, wherein:
the cap of the blood sampling pen is provided with the needle outlet, and the needle outlet simultaneously forms a needle returning opening for the blood sampling needle to withdraw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874426.2A CN111214244B (en) | 2019-09-17 | 2019-09-17 | Blood taking needle and blood taking pen with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910874426.2A CN111214244B (en) | 2019-09-17 | 2019-09-17 | Blood taking needle and blood taking pen with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111214244A CN111214244A (en) | 2020-06-02 |
| CN111214244B true CN111214244B (en) | 2022-09-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910874426.2A Active CN111214244B (en) | 2019-09-17 | 2019-09-17 | Blood taking needle and blood taking pen with same |
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| CN (1) | CN111214244B (en) |
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| US7604118B2 (en) * | 2003-12-15 | 2009-10-20 | Panasonic Corporation | Puncture needle cartridge and lancet for blood collection |
| JPWO2007069572A1 (en) * | 2005-12-12 | 2009-05-21 | 株式会社日南 | Puncture needle device |
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| CN2335571Y (en) * | 1998-07-08 | 1999-09-01 | 祝林 | Blood taking needle and needle inserting device |
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| CN202207149U (en) * | 2011-08-30 | 2012-05-02 | 厚美德生物科技股份有限公司 | Front-mounted blood sampling device |
| CN103190920A (en) * | 2012-01-10 | 2013-07-10 | 杨莲英 | Disposable double-insurance blood taking needle |
| CN103006240A (en) * | 2012-12-28 | 2013-04-03 | 苏州施莱医疗器械有限公司 | Safe and convenient and fast type disposable blood collection needle with double-surface cover cap |
| TW201515637A (en) * | 2013-10-24 | 2015-05-01 | Ysp Co Ltd | Disposable blood collecting lancet structure |
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| CN104665845A (en) * | 2015-03-10 | 2015-06-03 | 王振民 | Improved structure of top trigger disposable safety blood collector |
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| CN108420444A (en) * | 2018-05-23 | 2018-08-21 | 淮安市天达医疗器械有限公司 | Push type hemostix |
Also Published As
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|---|---|
| CN111214244A (en) | 2020-06-02 |
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