CN215938614U - Needle head and injection needle with same - Google Patents
Needle head and injection needle with same Download PDFInfo
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- CN215938614U CN215938614U CN202122224534.0U CN202122224534U CN215938614U CN 215938614 U CN215938614 U CN 215938614U CN 202122224534 U CN202122224534 U CN 202122224534U CN 215938614 U CN215938614 U CN 215938614U
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Abstract
The utility model discloses a needle head and an injection needle with the needle head, wherein the needle head comprises a cylindrical needle tube, a main blade surface which is inclined relative to the central axis of the needle tube is arranged at the tail end of the needle tube, a plurality of blade surfaces which are inclined relative to the central axis are sequentially arranged on the main blade surface, an auxiliary blade surface is arranged on one side opposite to the main blade surface, and the auxiliary blade surface comprises: first and second facets inclined with respect to the central axis, both the tip of the primary facet and the tip of the secondary facet forming a needle tip. The utility model provides a side that is relative at the former main blade face of needle point has increased vice blade face for the needle point is sharper, and it is littleer to pierce the area in the twinkling of an eye, can reduce patient's pain when reducing puncture resistance.
Description
Technical Field
The utility model relates to the field of medical injection needles, in particular to a needle head and an injection needle with the needle head.
Background
Conventional medical injection needle tubes have been used for injection of a medicinal solution or collection of blood, and such medical injection needle tubes are manufactured to have a sharp shape with a beveled blade face at the tip of the needle tube.
In using such a medical injection needle tube, emphasis is placed on relieving the pain of the patient when the needle tube is inserted, and the puncture resistance from the distal end to the middle section to the proximal end during the puncture of the needle gradually increases, so that the puncture pain is continuously felt, and there is still room for improvement and reduction in the effect of the puncture resistance.
Therefore, how to provide a needle with smaller puncture resistance and thus less pain for injection of a patient becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a needle head and an injection needle with the needle head, which can reduce the puncture resistance of a needle tube in the insertion process and optimize the puncture effect of the needle tube.
In order to achieve the above object, the present invention provides a needle head including a cylindrical needle tube, a main blade surface inclined with respect to a central axis of the needle tube being provided at a distal end of the needle tube, a plurality of blade surfaces inclined with respect to the central axis being sequentially provided on the main blade surface, and a sub blade surface being provided on a side opposite to the main blade surface, the sub blade surface including: first and second facets inclined with respect to the central axis, both the tip of the primary facet and the tip of the secondary facet forming a needle tip.
Optionally, a third edge surface is provided on the base end side of the main edge surface, inclined with respect to the central axis.
Optionally, a fourth edge surface and a fifth edge surface are connected to two sides of the outer peripheral surface of the third edge surface.
Optionally, the main land mid-section is provided with a transition land for connecting the base side and the tip side: a sixth facet and a seventh facet;
the sixth edge surface is connected with the fifth edge surface and the third edge surface; the seventh edge surface is connected with the fourth edge surface and the third edge surface; and both are inclined at a greater angle relative to the central axis than the third facet.
Optionally, the end side of the main facet is provided with a tip facet for connecting the middle section of the main facet and the secondary facet: an eighth facet and a ninth facet; and both are inclined at a greater angle relative to the central axis than the angle of inclination of the transition facet relative to the central axis.
Optionally, the central axis and the needle tip are located in the same vertical plane, and all the cutting surfaces included in the main cutting surface and the auxiliary cutting surface are symmetrical by taking the vertical plane as a symmetry plane.
Optionally, the first edge surface and the second edge surface are grouped, the fourth edge surface and the fifth edge surface are grouped, the sixth edge surface and the seventh edge surface are grouped, and the eighth edge surface and the ninth edge surface are grouped;
the two facets in each set each have the same angle of rotation about the third facet in opposite directions from each other about the central axis and the same angle of inclination with respect to the central axis.
Optionally, the inclination angle of the third facet with respect to the central axis is set to 10 ± 2 degrees;
the inclination angles of the fourth blade surface and the fifth blade surface relative to the central axis are set to be 7.5 +/-2 degrees;
the inclination angles of the sixth blade surface and the seventh blade surface relative to the central axis are set to be 11 +/-2 degrees;
the inclination angles of the eighth blade surface and the ninth blade surface relative to the central axis are set to be 18 +/-2 degrees;
the inclination angle of the first blade surface and the second blade surface relative to the central axis is set to be 20 +/-2 degrees.
Alternatively, the minor facet is formed after the major facet is formed, in which the facets included in the major facet are formed in order from the base end side to the tip end side.
Compared with the prior art, the needle head provided by the utility model has the advantages that compared with the single-side blade surface of the traditional injection needle, the auxiliary blade surface is additionally arranged on the side, opposite to the original main blade surface, of the needle head, so that the needle point is sharper, the area at the moment of puncture is smaller, and the pain of a patient can be relieved while the puncture resistance is reduced.
The utility model also provides an injection needle comprising the needle head, and the injection needle realizes liquid injection through the needle head and reduces pain of patients.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a top view of a needle provided in accordance with an embodiment of the present invention;
FIG. 2 is a chart of the rotational angle of a needle provided in accordance with an embodiment of the present invention;
FIG. 3 is a side view of a needle provided in accordance with an embodiment of the present invention;
fig. 4 is a rear view of a needle provided in accordance with an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring now to fig. 1 of the specification, fig. 1 of the specification is a top view of a needle provided by an embodiment of the present invention, including:
the tip of the needle cannula 1 is provided with a main cutting edge surface 2 inclined relative to the central axis of the needle cannula 1, a plurality of cutting edge surfaces inclined relative to the central axis are sequentially arranged on the main cutting edge surface 2, the sequentially arranged cutting edge surfaces are continuous at different inclination angles, wherein the inclination angle of the cutting edge surface closer to the base end side of the main cutting edge surface relative to the central axis is smaller, so that the main cutting edge surface 2 is a continuous multi-inclined-surface cutting edge surface with the inclination degree gradually increasing from the base end side to the tip end side. An auxiliary blade surface 3 is arranged on the opposite surface of the main blade surface 2, so that the tail end of the needle tube 1 is in a blade surface form on both the front surface and the back surface;
referring to fig. 4 of the specification, fig. 4 of the specification is a rear view of a needle provided by an embodiment of the present invention, and the secondary blade face 3 includes: the first blade surface 4 and the second blade surface 5 which are inclined relative to the central axis, the tail ends of the first blade surface and the second blade surface, namely the tail end of the auxiliary blade surface 3 and the tail end of the main blade surface 2 are connected in a shrinkage mode to form a needle point 6 of the needle head, the contact area of the needle point 6 after the auxiliary blade surface 3 is increased is smaller, and the puncture effect is stronger.
Further, a third blade surface 7 is provided on the base end side of the main blade surface 2 at a certain inclination angle with respect to the central axis, and the third blade surface 7 is inclined to the central axis to a small degree as a blade surface closer to the base end side.
Further, referring to fig. 3 of the specification, fig. 3 of the specification is a side view of a needle provided by an embodiment of the present invention, including: and a fourth blade surface 8 and a fifth blade surface 9 which are provided continuously on both sides of the outer peripheral surface of the third blade surface 7, and which have the smallest inclination with respect to the central axis as the blade surfaces closest to the base end side.
The fourth edge surface 8 and the fifth edge surface 9 are added, so that the transition between the needle point 6 and the needle tube 1 is smoother, the difference value of the puncture resistance values between the edge surface parts can be reduced, and the puncturing process of the needle point 6 is smoother.
Further, the middle section of the main blade surface 2 is provided with a transition blade surface connecting the base end side and the tip end side thereof: a sixth facet 10 and a seventh facet 11;
the sixth blade surface 10 is connected to the fifth blade surface 9 and the third blade surface 7; the seventh cutting edge surface 11 is connected to the fourth cutting edge surface 8 and the third cutting edge surface 7; that is, the sixth blade surface 10 is continuous with the third blade surface 7 and the fourth blade surface 8 at the middle of the major blade surface 2, and the seventh blade surface 11 is continuous with the third blade surface 7 and the fifth blade surface 9 at the middle of the major blade surface 2. The third edge surface 7 is continuous with the sixth edge surface 10 and the seventh edge surface 11, respectively, at the middle of the major edge surface 2.
The middle part of the main blade surface 2 is hollowed out to leave a vacuum part for conveying liquid, so that the sixth blade surface 10 is not in contact with the seventh blade surface 11 and the fourth blade surface 8, and the seventh blade surface 11 is not in contact with the fifth blade surface 9.
And the angle of inclination of the transition facet with respect to the central axis is greater than the angle of inclination of the third facet 7 with respect to the central axis.
Further, a tip facet is provided on the tip side of the main facet 2: an eighth blade surface 12 and a ninth blade surface 13, the base end side of the eighth blade surface 12 being connected to the seventh blade surface 11, and the tip end side thereof being connected to the second blade surface 5 in a contracting manner to form a blade edge; the ninth blade surface 13 is similarly connected to the sixth blade surface 10 at the base end side and to the first blade surface 4 at the tip end side to form a blade edge; in other words, the first blade surface 4 contacts only the ninth blade surface 13 and the second blade surface 5, and does not contact other blade surface portions; the second facet 5 is in contact with only the first facet 4 and the eighth facet 12 and not with the other facets. And the angle of inclination of the tip facet with respect to the central axis is greater than the angle of inclination of the transition facet.
Furthermore, the needlepoint 6 and the central axis are located in the same vertical plane 14, and the main cutting surface 2, the minor cutting surface 3 and all the cutting surfaces included therein are symmetrical with the vertical plane 14 as a symmetrical plane.
Further, two predetermined edge surfaces may be provided in groups, the first edge surface 4 being grouped with the second edge surface 5, the fourth edge surface 8 being grouped with the fifth edge surface 9, the sixth edge surface 10 being grouped with the seventh edge surface 11, and the eighth edge surface 12 being grouped with the ninth edge surface 13, the two edge surfaces in each group having the same rotation angle in opposite directions to each other about the central axis with respect to the third edge surface 7 and having the same inclination angle with respect to the central axis.
Referring to the specification and fig. 2, the specification and fig. 2 are views showing the rotation angle of a needle, and the rotation angle of the needle comprises:
the tip side of the main facet 2 extends from the needle tip 6 to the eighth facet 12 on one side in the circumferential direction and the needle tip 6 to the ninth facet 13 on the other side in the circumferential direction satisfy the condition: the eighth facet 12 and the ninth facet 13 have rotation angles a and-a in opposite directions about the central axis direction for the third facet 7;
the minor facet 3 is provided with a first facet 4 extending from the needle tip 6 to one side in the circumferential direction and a second facet 5 extending from the needle tip 6 to the other side in the circumferential direction, satisfying the condition: the first facet 4 and the second facet 5 have rotation angles b and-b in opposite directions with respect to the vertical plane 14;
by analogy, the two edge surfaces in each group have the same rotation angle with opposite directions.
Further, the inclination angle of the third blade surface 7 with respect to the central axis is set to 10 ± 2 degrees;
the inclination angles of the fourth blade surface 8 and the fifth blade surface 9 relative to the central axis are set to be 7.5 +/-2 degrees;
the inclination angles of the sixth blade surface 10 and the seventh blade surface 11 with respect to the central axis are set to 11 ± 2 degrees;
the inclination angles of the eighth blade surface 12 and the ninth blade surface 13 with respect to the central axis are set to 18 ± 2 degrees;
the inclination angles of the first blade surface 4 and the second blade surface 5 with respect to the central axis are set to 20 ± 2 degrees.
Therefore, the blade face closer to the base end side has a smaller inclination angle, and the blade face closer to the tail end side has a larger inclination angle, so that the needle head structure can provide a smooth transition for the whole body, and pain during puncture is reduced.
Further, the facets included in the major facet 2 are formed in order from the base end side to the tip end side, that is, the third facet 7 is formed first, then the fourth facet 8 and the fifth facet 9 are formed, then the sixth facet 10 and the seventh facet 11 are formed, and finally the eighth facet 12 and the ninth facet 13 are formed.
Since the inclination angle of the blade face is gradually increased from the base end side to the tip end side, the manufacturing process is more convenient in the above order, wherein since the fourth blade face 8 and the fifth blade face 9 are continuous in accordance with the outer peripheral surface of the third blade face 7, the fourth blade face 8 and the fifth blade face 9 are manufactured after the third blade face 7 is formed.
After the primary cutting face 2 is manufactured, the first cutting face 4 and the second cutting face 5 of the secondary cutting face 3 are manufactured on the opposite sides according to the eighth cutting face 12 and the ninth cutting face 13 at the tail end of the primary cutting face 2, so that a cutting edge is formed between the first cutting face 4 and the second cutting face 5, and the needle point 6 is formed, the contact area of the needle point 6 is reduced compared with the original needle manufactured in the mode, and the puncture capacity is improved.
The application also provides a syringe needle comprising the syringe needle, and the specific setting and using method of the syringe needle can refer to the prior art, and the detailed description is omitted herein.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The needle and the injection needle having the needle provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A needle comprising a cylindrical needle cannula, characterized in that: the tip of the syringe is provided with a main cutting edge surface inclined relative to the central axis of the syringe, the main cutting edge surface is sequentially provided with a plurality of cutting edge surfaces inclined relative to the central axis, and an auxiliary cutting edge surface is arranged on the opposite side of the main cutting edge surface and comprises: first and second facets inclined with respect to a central axis, both a tip of the primary facet and a tip of the secondary facet forming a needle tip.
2. The needle of claim 1, wherein: the base end side of the main blade surface is provided with a third blade surface inclined with respect to the central axis.
3. The needle of claim 2, wherein: and a fourth blade surface and a fifth blade surface are connected to two sides of the outer peripheral surface of the third blade surface.
4. A needle according to claim 3, wherein: the middle section of the main cutting edge surface is provided with a transition cutting edge surface used for connecting the base end side and the tail end side: a sixth facet and a seventh facet;
said sixth facet is connected to said fifth facet and said third facet; said seventh facet is connected to said fourth facet and said third facet; and both are inclined at a greater angle relative to the central axis than the third facet.
5. A needle according to claim 4, wherein: the tail end side of the main cutting surface is provided with a tip cutting surface used for connecting the middle section of the main cutting surface and the auxiliary cutting surface: an eighth facet and a ninth facet; and both are inclined at an angle relative to the central axis that is greater than the angle of inclination of the transition facet relative to the central axis.
6. A needle according to claim 5, wherein: the central axis and the needle point are positioned in the same vertical plane, and all the blade surfaces included in the main blade surface and the auxiliary blade surface are symmetrical by taking the vertical plane as a symmetrical plane.
7. The needle of claim 6, wherein: said first edge surface is ganged with said second edge surface, said fourth edge surface is ganged with said fifth edge surface, said sixth edge surface is ganged with said seventh edge surface, and said eighth edge surface is ganged with said ninth edge surface;
the two facets in each set have the same angle of rotation about the central axis in opposite directions from each other with respect to the third facet and the same angle of inclination with respect to the central axis.
8. A needle according to any one of claims 1 to 7, wherein:
the inclination angle of the third blade surface relative to the central axis is set to be 10 +/-2 degrees;
the inclination angles of the fourth blade surface and the fifth blade surface relative to the central axis are set to be 7.5 +/-2;
the inclination angles of the sixth blade surface and the seventh blade surface relative to the central axis are set to be 11 +/-2 degrees;
the inclination angles of the eighth blade surface and the ninth blade surface relative to the central axis are set to be 18 +/-2 degrees;
the first and second blade surfaces are inclined at an angle of 20 ± 2 degrees with respect to the central axis.
9. A needle according to any one of claims 1 to 7, wherein: the secondary facet is formed after the primary facet is formed, wherein facets included in the primary facet are formed in order from a base end side to a tip end side.
10. An injection needle characterized by: a needle comprising a needle according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224534.0U CN215938614U (en) | 2021-09-14 | 2021-09-14 | Needle head and injection needle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122224534.0U CN215938614U (en) | 2021-09-14 | 2021-09-14 | Needle head and injection needle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215938614U true CN215938614U (en) | 2022-03-04 |
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ID=80429694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122224534.0U Active CN215938614U (en) | 2021-09-14 | 2021-09-14 | Needle head and injection needle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215938614U (en) |
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2021
- 2021-09-14 CN CN202122224534.0U patent/CN215938614U/en active Active
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