Double-grinding-surface low-chip puncture needle head
By designing a double-grinding surface low-cut chip puncture needle, using angle settings and transition zone treatment, the problem of glue plug chips during needle tip aspiration is solved, and the infusion quality and patient safety are improved.
Patent Information
- Application Number
- CN202420575854.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-03-22
AI Technical Summary
During the needle tip puncture, the rubber plug is easily extruded and deformed, causing the rubber to be squeezed into the needle tube or produce rubber plug debris, affecting the quality of the infusion and patient safety.
A double-ground low-cut chip puncture needle is designed, by setting the first angle greater than the second angle, the squeeze pressure of the rubber plug is reduced, and a smooth or blunt edge transition zone is provided between the inner wall of the needle and the second edge surface to avoid cutting rubber.
Effectively reduce or avoid the generation of glue plug debris, ensuring the quality of infusion and the safety of patients' medication.
Smart Images
Figure CN222942758U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of needles, and particularly relates to a double-grinded surface low-chip puncture needle. Background Art
[0002] The rubber stopper is a component of the medicine, and its main function is to seal the medicine in a specific container. Since the material of the rubber stopper is relatively soft, during the conventional needle puncture process, the rubber stopper will be squeezed and deformed by the puncture needle, and part of the rubber may be squeezed into the needle tube or rubber stopper debris may fall into the medicine container.
[0003] Since the edge between the bevel of the needle tip and the inner wall of the puncture needle is very sharp, when the puncture speed is very fast, the sharp edge has a chance to cut off a part of the rubber squeezed in the needle tube and produce rubber plug debris. This not only affects the quality of infusion, but also has an impact on the patient's psychology and physiology, and cannot guarantee the patient's medication safety. Utility Model Content
[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides a double-ground surface low-chip puncture needle. The technical problem to be solved by the utility model is how to solve the problem of rubber plug chips falling off during the needle tip puncture process.
[0005] In order to solve the above technical problems, the utility model provides a double-grinded surface low-chip puncture needle, comprising a needle body;
[0006] The needle body has a first grinding surface and a second grinding surface above; the second grinding surface is arranged below the first grinding surface, and the first grinding surface forms a first angle with the axis of the needle body; the second grinding surface forms a second angle with the axis of the needle body; the first angle is greater than the second angle, and by setting the first angle greater than the second angle, when the needle penetrates the rubber plug, the extrusion of the rubber plug becomes smaller, and the rubber plug is not easily squeezed into the inside of the needle tube.
[0007] Furthermore, the needle body has an inner wall, and at least a portion of the area between the inner wall and the second grinding surface is provided with a transition zone.
[0008] Furthermore, the entire area between the inner wall and the second grinding surface is provided with a transition zone.
[0009] Furthermore, the transition zone is a smooth transition zone or a blunt-edged transition zone, so that when the needle penetrates the rubber plug, the transition zone will not cut off the rubber plug squeezed into the needle hole, thereby avoiding the occurrence of chip falling.
[0010] Furthermore, the smooth surface of the smooth transition zone protrudes outward.
[0011] Furthermore, the first angle is 15-45 degrees, and the second angle is 5-30 degrees.
[0012] Furthermore, the first angle is 21-27 degrees, and the second angle is 10-16 degrees.
[0013] Furthermore, the first angle is 24 degrees, and the second angle is 13 degrees.
[0014] The utility model discloses a double-ground surface low-chip puncture needle. By setting the first angle greater than the second angle, when the needle penetrates the rubber plug, the extrusion of the rubber plug becomes smaller, and the rubber plug is not easily squeezed into the inside of the needle tube. The utility model performs special process treatment on the transition zone between the second ground surface and the inner wall, such as sandblasting, grinding, corrosion and passivation, to eliminate the sharp edges of the transition zone. During the needle puncture process, the transition zone will not cut the rubber squeezed into the inner hole of the needle tube, thereby reducing or avoiding the chip falling phenomenon, ensuring the quality of infusion and ensuring the safety of patient medication. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structural schematic diagram of a double-grinded surface low-chip puncture needle.
[0016] Figure 2 It is a partial enlarged view of a double-grinded surface low-chip puncture needle of the utility model.
[0017] Figure 3 It is a side view of a double-grinded surface low-chip puncture needle of the utility model; in the figure, A represents the first angle, and B represents the second angle.
[0018] Among them, 1. first grinding surface; 2. second grinding surface; 3. inner wall; 4. transition zone; 5. outer wall; 6. needle body. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0023] In order to better understand the purpose, structure and function of the utility model, the double-grinded surface low-chip puncture needle of the utility model is further described in detail below with reference to the accompanying drawings.
[0024] Example
[0025] During conventional needle puncture, the rubber stopper will be squeezed and deformed by the puncture needle, and a portion of the rubber may be squeezed into the hole of the needle tube or rubber stopper debris may fall into the medicine container. The embodiment of the utility model discloses a double-ground surface low-chip puncture needle, which greatly reduces the occurrence of the above situation.
[0026] Combination Figure 1 , Figure 2 and Figure 3 As shown, the utility model discloses a double-grinded surface low-chip puncture needle, comprising a needle body 6;
[0027] A first grinding surface 1 and a second grinding surface 2 are provided above the needle body 6; the second grinding surface 2 is arranged below the first grinding surface 1, and the first grinding surface 1 forms a first angle with the axis of the needle body 6; the second grinding surface 2 forms a second angle with the axis of the needle body 6; the first angle is greater than the second angle; by setting the first angle greater than the second angle, when the needle penetrates the rubber plug, the extrusion force on the rubber plug becomes smaller, and the rubber plug is not easily squeezed into the inside of the needle tube.
[0028] Preferably, the first angle A is in the range of 15-45 degrees, and the second angle B is in the range of 5-30 degrees.
[0029] More preferably, the first angle A is in the range of 21-27 degrees, and the second angle B is in the range of 10-16 degrees.
[0030] More preferably, the first angle A is 24 degrees and the second angle B is 13 degrees.
[0031] During the conventional puncture process, the edge between the bevel of the needle tip and the inner wall is very sharp. When the puncture speed is very fast, there is a chance that a part of the rubber squeezed in the needle tube will be cut off, thereby generating rubber plug debris. In order to solve this problem, the utility model is provided with a transition zone 4.
[0032] Specifically, the needle body 6 has an inner wall 3 , and at least a portion of the area between the inner wall 3 and the second grinding surface 2 is provided with a transition zone 4 .
[0033] Furthermore, the entire area between the inner wall 3 and the second grinding surface 2 is provided with a transition area 4 .
[0034] Furthermore, the transition zone 4 is a smooth transition zone or a blunt-edged transition zone, so that when the needle penetrates the plug, the transition zone 4 will not cut off the plug squeezed into the needle tube, avoiding the occurrence of chip falling, ensuring the quality of infusion, and ensuring the safety of patient medication.
[0035] Furthermore, the smooth surface of the smooth transition zone protrudes outward.
[0036] The transition zone 4 is realized by special processing, including but not limited to sandblasting, grinding, corrosion, passivation, chamfering and other processes, to eliminate sharp edges and not cut the rubber squeezed into the inner hole of the needle tube during the puncture process.
[0037] The needle body 6 has an outer wall 5 .
[0038] The processing process of the first grinding surface 1 and the second grinding surface 2 of the double-grinding surface low-chip puncture needle of the utility model is as follows:
[0039] An example is given below where the first angle is 24 degrees and the second angle is 13 degrees.
[0040] First, a 13-degree bevel is processed as the second grinding surface 2, and then the second grinding surface 2 is sandblasted using 320# glass beads to remove all cutting edges of the second grinding surface 2, completing the processing of the transition zone 4;
[0041] The first grinding surface 1 is further processed at 24 degrees, so that the outer edge of the first grinding surface 1 has a cutting edge to ensure that the puncture force of the needle is not affected;
[0042] Then blow clean air into the needle, then pickle and ultrasonically clean it to ensure that the sandblasting residue inside the needle is removed, and then protect the needle before packaging.
[0043] The puncture test of the rubber plug was carried out using conventional needles and the double-ground low-chip puncture needle of the utility model. Each type of needle was used for 12 groups of experiments, with one rubber plug in each group. Except for the different needles, other experimental conditions were completely the same. The experimental results are shown in Table 1:
[0044] Table 1 Puncture test result record
[0045]
[0046] In Table 1, “√” indicates that there is no chip falling, and “X” indicates that there is chip falling.
[0047] As shown in Table 1, the conventional needle sheds chips twice, while the double-grinded low-chip puncture needle of the utility model does not shed chips. The double-grinded low-chip puncture needle is superior to the conventional needle.
[0048] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.
Claims
1. A double-grinded low-chip puncture needle, characterized in that: including a needle body; The needle body has a first grinding surface and a second grinding surface above; the second grinding surface is arranged below the first grinding surface, and the first grinding surface forms a first angle with the axis of the needle body; the second grinding surface forms a second angle with the axis of the needle body; the first angle is greater than the second angle; the needle body has an inner wall, and at least a part of the area between the inner wall and the second grinding surface is provided with a transition zone, and the transition zone is a smooth transition zone or a blunt-edge transition zone.
2. The double-ground low-chip puncture needle according to claim 1, characterized in that: The entire area between the inner wall and the second grinding surface is provided with a transition area.
3. The double-ground low-chip puncture needle according to claim 2, characterized in that: The rounded surface of the rounded transition zone is convex outward.
4. The double-ground low-chip puncture needle according to any one of claims 1 to 3, characterized in that: The first angle is 15-45 degrees, and the second angle is 5-30 degrees.
5. The double-ground low-chip puncture needle according to claim 4, characterized in that: The first angle is 21-27 degrees, and the second angle is 10-16 degrees.
6. The double-ground low-chip puncture needle according to claim 5, characterized in that: The first angle is 24 degrees, and the second angle is 13 degrees.