Stable needle holder

Abstract

The utility model provides a stable type needle holder, relates to the technical field of medical instruments, and aims to solve the technical problem that in the prior art, a blood taking needle is deviated and cannot smoothly enter a blood taking tube, so that the taken blood leaks into the needle holder, The stable type needle holder comprises a needle holder main body, a first end of the needle holder, a second end of the needle holder, a third end of the needle holder and a fourth end of the needle holder, the first end is used for allowing a rubber sheath of the blood taking needle to extend in, and is provided with a connecting part used for being connected with a connecting structure arranged on the blood taking needle; the second end of the needle holder is used for the blood collection tube to extend into; the alignment elastic piece assembly is arranged on the inner wall of the needle holder body and comprises a first elastic piece assembly and at least two first elastic pieces, the first elastic pieces are evenly distributed in the circumferential direction of the needle holder body, and the first elastic pieces can abut against the outer wall of a tube body of the blood collection tube. According to the utility model, the outer wall of the blood collection tube body can be clamped and limited at a plurality of points, so that the central axis of the blood collection tube and the central axis of the needle holder main body are on the same straight line, and the tube is fed in an aligned manner.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a stable needle holder. Background Art

[0002] A vacuum blood collection tube is a disposable, negative-pressure vacuum glass tube that can achieve quantitative blood collection. It needs to be used with a venous blood collection needle and a blood collection needle holder.

[0003] When in use, first insert the rear end of the blood collection needle into the front end of the sleeve of the needle holder, and the two are connected by a threaded fit; during puncture, hold the needle holder with one hand to perform venous puncture; when the venous puncture is successful, insert the vacuum blood collection tube into the hollow part of the sleeve of the needle holder, use the index finger and middle finger to clamp the rear end flange of the needle holder, and apply pressure to the bottom of the vacuum blood collection tube in the opposite direction with the thumb; after installing the vacuum blood collection tube, perform blood collection; after blood collection is completed, the needle holder needs to be separated from the blood collection needle.

[0004] The applicant has discovered that the prior art has at least the following technical problems:

[0005] Because the sleeve of current needle holders is hollow and has a relatively large space to facilitate the insertion of blood collection tubes, if the tube is misaligned and not aligned with the sleeve during insertion, the blood collection needle may be misaligned when connected to the tube. This means that the needle cannot be inserted smoothly into the tube, causing the collected blood to leak into the needle holder.

[0006] Therefore, a stable needle holder is urgently needed to solve the above technical problems. Utility Model Content

[0007] The present utility model aims to provide a stable needle holder to address the existing technical problems of the hollow interior of the needle holder sleeve and the relatively large sleeve space required to facilitate the insertion of a blood collection tube. When inserting a blood collection tube, if the tube is misaligned and not properly aligned with the sleeve, the blood collection needle may be misaligned when connected to the tube, preventing the needle from properly inserting into the tube, resulting in leakage of collected blood into the needle holder. The various technical advantages of the preferred technical solutions provided by the present utility model are detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] The utility model provides a stable needle holder, comprising:

[0010] The needle holder body is configured as a hollow structure. The first end of the needle holder body is used for inserting the rubber sheath of the blood collection needle. The first end is provided with a connecting portion for connecting to the connecting structure provided on the blood collection needle. The second end of the needle holder body is used for inserting the blood collection tube.

[0011] The alignment spring element assembly is arranged on the inner wall of the needle holder body, and includes a first spring element assembly. The first spring element assembly includes at least two first spring elements. The first spring elements are evenly distributed along the circumference of the needle holder body, and the first spring elements can abut against the outer wall of the tube body of the blood collection tube.

[0012] Preferably, the alignment spring assembly further includes a second spring assembly, and the second spring assembly includes at least two second springs, wherein:

[0013] The second elastic piece is evenly distributed along the circumference of the needle holder body, and is disposed between the first elastic piece and the first end. The second elastic piece can abut against the outer wall of the end of the blood collection tube;

[0014] An accommodating space is formed between the first elastic piece and the second elastic piece. The accommodating space can accommodate the end of the blood collection tube and make the central axis of the blood collection tube collinear with the central axis of the needle holder body.

[0015] Preferably, the first elastic piece and the second elastic piece are both arc-shaped elastic pieces.

[0016] Preferably, the first elastic piece includes a first segment, a second segment, and an arc segment connecting the first segment and the second segment, wherein:

[0017] The angle between the first section and the inner wall of the needle holder body is set to a first angle;

[0018] The angle between the second section and the inner wall of the needle holder body is set to a second angle;

[0019] The first angle and the second angle are both set to be obtuse angles, and the angle of the first angle is greater than the angle of the second angle.

[0020] Preferably, the maximum distance between the first elastic piece and the inner wall of the needle holder body is greater than the maximum distance between the second elastic piece and the inner wall of the needle holder body.

[0021] Preferably, the cross-sectional diameter of the first end is larger than the cross-sectional diameter of the second end.

[0022] Preferably, an anti-slip structure is provided on the outer wall of the needle holder body.

[0023] Preferably, an inner wall of the rubber sheath of the blood collection needle is provided with an interlayer, and hard particles are provided in the interlayer.

[0024] Preferably, the length of the rubber sheath is no more than 1 cm.

[0025] Preferably, the end of the rubber sheath is a laminated ring structure.

[0026] The utility model provides a kind of stable needle holder, including needle holder main part and alignment spring piece assembly. Among them, needle holder main part is set to hollow structure, first end, for the rubber sheath of blood taking needle to extend into, second end, for blood taking tube to extend into. Alignment spring piece assembly, set in the inner wall of needle holder main part, including first spring piece assembly, first spring piece assembly includes at least two first spring pieces, first spring piece is evenly distributed along the circumference of needle holder main part, by setting multiple structures same first spring pieces evenly distributed along the circumference of needle holder main part and first spring piece can be contacted with the outer wall of blood taking tube body, multiple structures same first spring pieces can be contacted with the outer wall of blood taking tube body along the circumference of blood taking tube body, and then the outer wall of blood taking tube body is clamped and limited in multiple points, so that the central axis of blood taking tube is on the same straight line with the central axis of needle holder main part, to carry out direct alignment into tube, when using, the end center of rubber sheath can be directly contacted with the end center of blood taking tube, to avoid into tube deviation. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0028] Figure 1 It is the structure schematic view of one embodiment of the utility model stable needle holder;

[0029] Figure 2 It is the structure schematic view of one embodiment of the utility model stable needle holder; Figure 1

[0030] Figure 3 It is the structure schematic view of blood taking needle in the utility model stable needle holder;

[0031] Figure 4 It is the structure schematic view of blood taking tube in the utility model stable needle holder;

[0032] Figure 5 It is the structure schematic view of blood taking tube into tube process in the utility model stable needle holder Figure 1 ;

[0033] Figure 6 It is the structure schematic view of blood taking tube into tube process in the utility model stable needle holder​Figure 2 ;

[0034] Figure 7 is the structure diagram of the stable needle holder in the process of blood collection tube entering tube of the blood collection tube Figure 3 ;

[0035] Figure 8 is the structure diagram of the stable needle holder in the process of blood collection tube entering tube of the blood collection tube Figure 4 ;

[0036] Figure 9 is Figure 3 the enlarged structure diagram of A in the utility model

[0037] In the figure: 1, needle holder main body;11, first end;110, connecting part;12, second end;13, anti-skid structure;

[0038] 2, spring piece assembly;20, containing space;21, first spring piece assembly;211, first spring piece;2111, first section;2112, second section;2113, arc section;201, first angle;202, second angle;22, second spring piece assembly;221, second spring piece;

[0039] 3, blood collection needle;30, connecting structure;31, rubber sheath;311, interlayer;312, particle;32, needle body;

[0040] 4, blood collection tube;41, tube body;42, end head. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope protected by the utility model.

[0042] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0043] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0044] Figure 1 Schematic diagram of the structure of this embodiment, Figure 2 yes Figure 1 The cross-sectional structural diagram of Figure 1 and Figure 2 As shown, this embodiment provides a stable needle holder, including a needle holder body 1 and an alignment spring assembly 2.

[0045] Among them, the needle holder body 1 is made of transparent plastic material, and the needle holder body 1 is set to a hollow structure. The first end 11 of the needle holder body 1 is used for the rubber sheath 31 of the blood collection needle 3 to extend into, and the second end 12 of the needle holder body 1 is used for the blood collection tube 4 to extend into.

[0046] In this embodiment, a connecting portion 110 is provided at the first end 11 for connecting to the connecting structure 30 provided on the lancet 3. Specifically, the connecting portion 110 in this embodiment is a hollow cylindrical structure provided at the center of the first end 11 and protruding from the first end 11, and a first thread is provided on the inner wall thereof; Figure 3 Schematic diagram of the structure of the blood collection needle in this embodiment. Figure 3 As shown, a connecting structure 30 is provided between the rubber sheath 31 and the needle body 32 of the blood collection needle 3. The connecting structure 30 is a columnar structure with a cross-sectional diameter larger than that of the rubber sheath 31, and a second thread that can be matched with the first thread is provided on its outer surface.

[0047] The alignment spring assembly 2 is disposed on the inner wall of the needle holder body 1 and includes a first spring assembly 21. The first spring assembly 21 includes at least two first springs 211, which are evenly distributed along the circumference of the needle holder body 1. Figure 4 Schematic diagram of the structure of the blood collection tube in this embodiment. Figure 4As shown, the first elastic sheet 211 can abut against the outer wall of the tube body 41 of the blood collection tube 4. By arranging a plurality of first elastic sheets 211 of the same structure along the circumference of the needle holder body 1 and allowing the first elastic sheets 211 to abut against the outer wall of the tube body 41 of the blood collection tube 4, the plurality of first elastic sheets 211 of the same structure can apply the same force to the tube body 41 of the blood collection tube 4 along the circumference of the tube body 41, thereby clamping and limiting the tube body 41 of the blood collection tube 4 at multiple points, and making the central axis of the blood collection tube 4 and the central axis of the needle holder body 1 on the same straight line, so as to be correctly positioned into the tube. In use, the end of the rubber sheath 31 can directly abut against the center of the end 42 of the blood collection tube 4, so as to avoid deviation of the tube.

[0048] As an optional embodiment, the alignment elastic sheet assembly 2 further comprises a second elastic sheet assembly 22, and the second elastic sheet assembly 22 comprises at least two second elastic sheets 221. The second elastic sheets 221 are arranged along the circumference of the needle holder body 1, and the second elastic sheets 221 are arranged between the first elastic sheets 211 and the first end 11. The second elastic sheets 221 can abut against the outer wall of the end 42 of the blood collection tube 4.

[0049] By arranging a plurality of second elastic sheets 221 of the same structure along the circumference of the needle holder body 1 and allowing the second elastic sheets 221 to abut against the outer wall of the end 42 of the blood collection tube 4, the plurality of second elastic sheets 221 of the same structure can apply the same force to the end 42 of the blood collection tube 4 along the circumference of the end 42, thereby clamping and limiting the end 42 of the blood collection tube 4 at multiple points, and making the central axis of the blood collection tube 4 and the central axis of the needle holder body 1 on the same straight line, so as to be correctly positioned into the tube. In use, the end of the rubber sheath 31 can directly abut against the center of the end 42 of the blood collection tube 4, so as to avoid deviation of the tube.

[0050] In this embodiment, the first elastic sheet 211 is arranged closer to the second end 12, i.e. the tube insertion end of the needle holder body 1. After the blood collection tube 4 is aligned by the first elastic sheet assembly 21, the blood collection tube 4 is aligned again by the second elastic sheet assembly 22 which is arranged closer to the first end 11, so as to further avoid deviation of the tube and ensure that the blood collection tube 4 is centrally aligned in the needle holder body 1.

[0051] Further, the first elastic sheet 211 and the second elastic sheet 221 in this embodiment form an accommodation space 20, and the accommodation space 20 can accommodate the end 42 of the blood collection tube 4 and make the central axis of the blood collection tube 4 and the central axis of the needle holder body 1 on the same straight line.

[0052] By arranging the distance between the first elastic sheet 211 and the second elastic sheet 221, the two ends of the end 42 can abut against the first elastic sheet 211 and the second elastic sheet 221 respectively, i.e. the accommodation space 20 can just accommodate the end 42 and make the end 42 straight.

[0053] As an optional implementation, both the first elastic piece 211 and the second elastic piece 221 are arc-shaped elastic pieces.

[0054] Specifically, the first elastic piece 211 includes a first segment 2111 , a second segment 2112 , and an arc segment 2113 connecting the first segment 2111 and the second segment 2112 .

[0055] Among them, the angle between the first section 2111 and the inner wall of the needle holder body 1 is set to a first angle 201; the angle between the second section 2112 and the inner wall of the needle holder body 1 is set to a second angle 202; the first angle 201 and the second angle 202 are both set to obtuse angles, and the angle of the first angle 201 is greater than the angle of the second angle 202.

[0056] This arrangement makes the side of the first spring piece 211 closer to the second end 12, i.e., the tube entry end, relatively flat. This allows the blood collection tube 4 to be slowly aligned during insertion, ensuring proper alignment and smooth insertion. Making the side of the first spring piece 211 farther from the second end 12 relatively steep allows the blood collection tube 4 to be removed more smoothly and quickly during removal.

[0057] Similarly, the second elastic piece 221 may be configured to have a side closer to the second end 12 that is relatively flat, and another side that is relatively steep.

[0058] As an optional embodiment, the maximum distance between the first spring piece 211 and the inner wall of the needle holder body 1 is greater than the maximum distance between the second spring piece 221 and the inner wall of the needle holder body 1. With this arrangement, after the tube is inserted, the first spring piece 211 and the second spring piece 221 can respectively abut against the tube body 41 and the end piece 42, thereby preventing the first spring piece assembly 21 from failing to limit the tube body 41 after the second spring piece 221 abuts against the end piece 42.

[0059] like Figures 5-8 This is a diagram of the blood collection tube feeding process, as shown in Figures 5-8 As shown, reference Figure 5 , the blood collection tube 4 is introduced into the needle holder body 1 from the second end 12 thereof along the direction of the arrow; Figure 6 When the end 42 of the blood collection tube 4 enters the tube and contacts the first elastic fragment assembly 21, it continues to enter the tube toward the interior of the needle holder body 1. At this time, the end 42 of the blood collection tube 4 can achieve preliminary alignment due to contact with the first elastic fragment assembly 21; Figure 7 When the tube is continuously inserted until the end 42 of the blood collection tube 4 is completely inserted into the accommodation space 20, the first spring assembly 21 abuts against the outer wall of the tube body 41 of the blood collection tube 4. At the same time, the peripheries of both end surfaces of the end 42 of the blood collection tube 4 abut against the first spring assembly 21 and the second spring assembly 22 respectively, ensuring that the blood collection tube 4 is centered. Figure 8, continue to advance the tube until the end 42 of the blood collection tube is closer to the end wall of the first end 11 of the needle holder body 1. At this time, the blood collection needle 3 can be connected to the end of the blood collection tube 4 in the right position. During the entire tube advancement process, the blood collection tube 4 is centered many times to avoid the problem of the blood collection needle 3 being pierced off-center.

[0060] As an optional embodiment, the cross-sectional diameter of the first end 11 is larger than the cross-sectional diameter of the second end 12 . By setting the needle holder body 1 to be conical, it is convenient to hold and insert and remove the blood collection tube 4 smoothly.

[0061] In order to further improve the grip of the needle holder body 1 and make it more convenient to operate, in this embodiment, an anti-slip structure 13 is provided on the outer wall of the needle holder body 1. Optionally, the anti-slip structure 13 in this embodiment adopts a plurality of rectangular protrusions provided along the length direction of the needle holder body 1.

[0062] As an optional implementation, Figure 9 yes Figure 3 The enlarged structural diagram at A is as follows: Figure 9 As shown, the inner wall of the rubber sheath 31 of the blood collection needle 3 is provided with an interlayer 311, and hard particles 312 are provided in the interlayer 311. In addition, the length of the rubber sheath 31 in this embodiment does not exceed 1 cm.

[0063] With this arrangement, the end of the needle body 32 is limited in the channel in the middle of the interlayer 311, which can avoid the problem of the blood collection needle 3 being misaligned during the insertion process due to the soft and long end of the rubber sheath 31.

[0064] Optionally, the end of the rubber sheath 31 is set to a stacked ring structure. When the blood collection needle 3 is inserted into the blood collection tube 4, the end of the rubber sheath 31 can be folded, ensuring that the blood collection tube 4 can contact the relatively flat rubber sheath 31 after folding, so that the connection between the blood collection needle 3 and the blood collection tube 4 can be more tightly connected.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A stable needle holder, characterized in that: include: The needle holder body is configured as a hollow structure. The first end of the needle holder body is used for inserting the rubber sheath of the blood collection needle. The first end is provided with a connecting portion for connecting to the connecting structure provided on the blood collection needle. The second end of the needle holder body is used for inserting the blood collection tube. The alignment spring element assembly is arranged on the inner wall of the needle holder body, and includes a first spring element assembly. The first spring element assembly includes at least two first spring elements. The first spring elements are evenly distributed along the circumference of the needle holder body, and the first spring elements can abut against the outer wall of the tube body of the blood collection tube.

2. The stable needle holder according to claim 1, characterized in that: The alignment spring assembly further includes a second spring assembly, and the second spring assembly includes at least two second springs, wherein: The second elastic piece is evenly distributed along the circumference of the needle holder body, and is disposed between the first elastic piece and the first end. The second elastic piece can abut against the outer wall of the end of the blood collection tube; An accommodating space is formed between the first elastic piece and the second elastic piece. The accommodating space can accommodate the end of the blood collection tube and make the central axis of the blood collection tube collinear with the central axis of the needle holder body.

3. The stable needle holder according to claim 2, characterized in that: The first spring piece and the second spring piece are both arc-shaped spring pieces.

4. The stable needle holder according to claim 3, characterized in that: The first elastic piece includes a first segment, a second segment, and an arc segment connecting the first segment and the second segment, wherein: The angle between the first section and the inner wall of the needle holder body is set to a first angle; The angle between the second section and the inner wall of the needle holder body is set to a second angle; The first angle and the second angle are both set to be obtuse angles, and the angle of the first angle is greater than the angle of the second angle.

5. The stable needle holder according to any one of claims 2 to 4, characterized in that: The maximum distance between the first elastic piece and the inner wall of the needle holder body is greater than the maximum distance between the second elastic piece and the inner wall of the needle holder body.

6. The stable needle holder according to any one of claims 1 to 4, characterized in that: The cross-sectional diameter of the first end is larger than the cross-sectional diameter of the second end.

7. The stable needle holder according to claim 6, characterized in that: An anti-slip structure is provided on the outer wall of the needle holder body.

8. The stable needle holder according to any one of claims 1 to 4, characterized in that: An interlayer is arranged on the inner wall of the rubber sheath of the blood collection needle, and hard particles are arranged in the interlayer.

9. The stable needle holder according to claim 7, characterized in that: The length of the rubber sheath does not exceed 1 cm.

10. The stable needle holder according to claim 7, characterized in that: The end of the rubber sheath is a stacked ring structure.

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