Anti-folding remaining needle structure

Abstract

The utility model relates to an anti-folding remaining needle structure, and relates to the technical field of medical instruments. Comprising an indwelling needle body, a wing plate and a needle. One side of the remaining needle body is a first abutting surface, and the first abutting surface is used for abutting against the skin; the wing plate is arranged on the remaining needle body and used for abutting against the skin, and the face, abutting against the skin, of the wing plate is flush with the first abutting face; the needle head is arranged on the remaining needle body and is close to the first abutting face. When an existing indwelling needle is used, only a wing plate abuts against the skin, and a gap exists between an indwelling needle body and the skin, but when the anti-folding indwelling needle structure is used, the indwelling needle body is placed, and the first abutting face and the wing plate abut against the skin together, so that the distance between a needle head arranged on the indwelling needle body and the skin is greatly reduced; the risk that the remaining needle is folded in the using process is reduced, and the problem that a needle head of an existing remaining needle is prone to being folded in the using process is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is involved in a kind of indwelling needle structure of preventing folding. BACKGROUND

[0002] The existing indwelling needle structure is composed of plastic indwelling needle body and needle head, and the needle head is usually composed of stainless steel core and soft outer sleeve tube. The indwelling needle with this structure has height difference between the outer sleeve tube of the needle head and the plastic indwelling needle body. After covering with transparent dressing, the indwelling needle soft sleeve tube is easy to fold, causing the infusion to be not smooth, and frequent position adjustment is needed, increasing the clinical workload.

[0003] The existing indwelling needle has the problem of needle folding during use. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide an indwelling needle structure for preventing folding, aiming at solving the problem of needle folding of the existing indwelling needle during use.

[0005] The indwelling needle structure for preventing folding provided in the application adopts the following technical scheme: an indwelling needle structure for preventing folding, comprising:

[0006] an indwelling needle body, one side of which is a first abutting surface, and the first abutting surface is used for abutting against the skin;

[0007] a wing plate, which is arranged on the indwelling needle body, is used for abutting against the skin, and the side of the wing plate abutting against the skin is flush with the first abutting surface;

[0008] a needle head, which is arranged on the indwelling needle body, is arranged close to the first abutting surface.

[0009] Optionally, the wing plate comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is arranged on the indwelling needle body, the other end is connected to the second connecting piece, the second connecting piece is used for abutting against the skin, and the end of the second connecting piece abutting against the skin is flush with the first abutting surface.

[0010] Optionally, the wing plate comprises a contact piece, the contact piece is arranged at the end of the second connecting piece abutting against the skin, the cross-sectional area of the contact piece is greater than that of the second connecting piece, the contact piece is used for abutting against the skin, and the side of the contact piece abutting against the skin is flush with the first abutting surface.

[0011] Optionally, the wing plate is provided with at least two wing plates, and the at least two wing plates are arranged on the two sides of the indwelling needle body, respectively.

[0012] Optionally, a side of the indwelling needle body away from the first abutting surface is a pressing surface, and the pressing surface is in an arc shape.

[0013] Optionally, a first liquid flow channel is formed in the indwelling needle body, and the first liquid flow channel is in communication with the flow channel of the needle head.

[0014] Optionally, the anti-folding indwelling needle structure comprises a needle head mounting portion, one end of the needle head mounting portion is arranged at one end of the indwelling needle body, the needle head is arranged at the other end of the needle head mounting portion, the needle head mounting portion is coaxially arranged with the indwelling needle body, a second abutting surface is arranged on one side of the needle head mounting portion, the second abutting surface is used for abutting against the skin, and the second abutting surface is flush with the first abutting surface.

[0015] Optionally, the area of the radial cross section of the needle head mounting portion is smaller than the area of the radial cross section of the indwinding needle body.

[0016] Optionally, a transition round corner or chamfer is arranged at the connection between the indwelling needle body and the needle head mounting portion.

[0017] Optionally, a second liquid flow channel is formed in the needle head mounting portion, one end of the second liquid flow channel is in communication with the first liquid flow channel, and the other end of the second liquid flow channel is in communication with the needle head.

[0018] Compared with the prior art, the embodiments of the present application have the following advantages:

[0019] In use, only the wing plate abuts against the skin, and there is a gap between the indwelling needle body and the skin, while in use of the anti-folding indwelling needle structure, the indwelling needle body is placed, the first abutting surface abuts against the skin together with the wing plate, the distance between the needle head arranged on the indwinding needle body and the skin is greatly reduced, the risk of folding of the indwelling needle in use is reduced, and the problem of easy folding of the needle head in use of the existing indwelling needle is solved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a whole structure schematic view of the anti-folding indwelling needle structure in the embodiment of the present application;

[0022] Figure 2is a side view of the anti-folding indwelling needle structure in the embodiment of the present application;

[0023] Figure 3 is a bottom structure schematic view of the anti-folding indwelling needle structure in the embodiment of the present application;

[0024] Figure 4 is a structure schematic view of the wing plate of the anti-folding indwelling needle structure in the embodiment of the present application.

[0025] Legend of reference signs:

[0026] 1, indwelling needle body; 11, first abutting surface; 12, pressing surface; 13, first liquid flow channel; 2, wing plate; 21, first connecting piece; 22, second connecting piece; 23, contact piece; 3, needle head; 4, needle head mounting portion; 41, second abutting surface. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] The present application will be further described in detail below in conjunction with the drawings in the description.

[0029] The embodiment of the present application discloses an anti-folding indwelling needle structure.

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , an anti-folding indwelling needle structure comprises an indwelling needle body 1, a wing plate 2 and a needle head 3. One side of the indwelling needle body 1 is a first abutting surface 11, which is used to abut against the skin; the wing plate 2 is arranged on the indwelling needle body 1, and is used to abut against the skin, and the side of the wing plate 2 abutting against the skin is flush with the first abutting surface 11; the needle head 3 is arranged on the indwelling needle body 1, and is arranged close to the first abutting surface 11.

[0031] The existing indwelling needle only has the wing plate 2 abutting against the skin when in use, and there is a gap between the indwelling needle body 1 and the skin, while the anti-folding indwelling needle structure in the present application places the indwelling needle body 1, and the first abutting surface 11 will abut against the skin together with the wing plate 2, greatly reducing the distance between the needle head 3 arranged on the indwelling needle body 1 and the skin, and reducing the risk of the indwelling needle being folded during use, thereby solving the problem that the needle head 3 of the existing indwelling needle is easy to be folded during use.

[0032] As shown in Figure 2 and Figure 4 , the wing plate 2 comprises a first connecting piece 21 and a second connecting piece 22, one end of the first connecting piece 21 is arranged on the indwelling needle body 1, the other end is connected to the second connecting piece 22, one end of the second connecting piece 22 is used to abut against the skin, and the end of the second connecting piece 22 abutting against the skin is flush with the first abutting surface 11.

[0033] Specifically, the first connecting piece 21 and the second connecting piece 22 are arranged vertically. Among them, the first connecting piece 21 is arranged parallel to the skin, and the second connecting piece 22 is arranged perpendicular to the skin.

[0034] One end of the first connecting piece 21 is arranged on the side wall of the indwelling needle body 1, and the other end of the second connecting piece 22 is arranged on the other end of the first connecting piece 21, and the other end of the second connecting piece 22 abuts against the skin.

[0035] The distance from the second connecting piece 22 to the indwelling needle body 1 is equal to the length of the first connecting piece 21.

[0036] Through the arrangement of the first connecting piece 21 and the second connecting piece 22, the contact range of the anti-kinking indwelling needle structure with the skin is increased, the support range of the anti-kinking indwelling needle structure is expanded, and the anti-kinking indwelling needle structure is more stable during use.

[0037] In this embodiment, the first connecting piece 21 is arranged on the axial center line of the side wall of the indwelling needle body 1.

[0038] The connection position of the first connecting piece 21 and the second connecting piece 22 not only realizes the increase of the stability of the anti-kinking indwelling needle structure, but also ensures that the first abutting surface 11 of the indwelling needle body 1 can abut against the skin. Thus, the distance from the needle 3 arranged on the indwelling needle body 1 to the skin is reduced, and the risk of the indwelling needle being kinked during use is reduced.

[0039] As shown in Figure 1 , Figure 2 and Figure 4 , the wing plate 2 comprises a contact piece 23, the contact piece 23 is arranged at the end of the second connecting piece 22 abutting against the skin, the cross-sectional area of the contact piece 23 is larger than that of the second connecting piece 22, the contact piece 23 is used to abut against the skin, and the surface of the contact piece 23 abutting against the skin is flush with the first abutting surface 11.

[0040] Specifically, the contact piece 23 is a contact plate, and the contact plate has a larger area in contact with the skin than the end of the second connecting piece 22, so that the anti-kinking indwelling needle structure is more stable during use.

[0041] Further, the included angle between the central axis of the contact plate in the direction of the needle 3 and the central axis of the indwelling needle is an acute angle.

[0042] When the medical staff uses the anti-kinking indwelling needle structure for puncture operation, the wing plate 2 with acute angle design can make the medical staff more easily hold and control the angle and depth of puncture, flexibly adjust the puncture direction, and make the puncture needle more accurately enter the vein.

[0043] As shown in Figure 1 and Figure 2 , the wing plate 2 is provided with at least two, and the at least two wing plates 2 are respectively arranged on the two sides of the indwelling needle body 1.

[0044] Specifically, the wing plate 2 is provided with two, and the two wing plates 2 are respectively arranged on the opposite sides of the indwelling needle body 1, and the two wing plates 2 are symmetrically arranged on the two sides of the indwelling needle body 1.

[0045] The symmetrical arrangement of the two wing plates 2 on the two sides of the indwelling needle body 1 can balance the stress on the two sides of the indwelling needle body 1, increase the contact area between the anti-kinking indwelling needle structure and the skin, and improve the stability of the anti-kinking indwelling needle structure during use.

[0046] As shown in Figure 2 and Figure 3 , the side of the indwelling needle body 1 away from the first abutting surface 11 is a pressing surface 12, and the shape of the pressing surface 12 is arc-shaped.

[0047] Specifically, the first abutting surface 11 is arranged at the bottom of the indwelling needle body 1, and the first abutting surface 11 is a plane to increase the contact area between the indwelling needle body 1 and the skin and improve the stability of the anti-kinking indwelling needle structure during use.

[0048] The pressing surface 12 is arranged at the top of the indwelling needle body 1, and the pressing surface 12 is an arc-shaped arched surface. Since the medical staff needs to press the hand on the indwelling needle body 1 when using the anti-kinking indwelling needle structure, the arched design of the pressing surface 12 can reduce the stress concentration of the hand of the medical staff in contact with the top of the indwelling needle body 1, and reduce the discomfort caused by the medical staff using the anti-kinking indwelling needle structure.

[0049] As shown in Figure 1 and Figure 2 , a first liquid flow channel 13 is formed in the indwelling needle body 1, and the first liquid flow channel 13 communicates with the needle 3.

[0050] Specifically, the first liquid flow channel 13 in the indwelling needle body 1 is coaxially arranged with the flow channel in the needle 3, and the medicinal liquid can flow in the first liquid flow channel 13 and the flow channel in the needle 3, thereby realizing the normal infusion function of the anti-kinking indwelling needle structure.

[0051] As Figure 1 and Figure 3 shown, the anti-kinking indwelling needle structure includes a needle mounting portion 4, one end of the needle mounting portion 4 is arranged at one end of the indwelling needle body 1, a needle 3 is arranged at the other end of the needle mounting portion 4, the needle mounting portion 4 is coaxially arranged with the indwelling needle body 1, a second abutting surface 41 is arranged on one side of the needle mounting portion 4, the second abutting surface 41 is used for abutting against the skin, and the second abutting surface 41 is flush with the first abutting surface 11.

[0052] Specifically, the shape of the radial cross section of the needle mounting portion 4 is the same as the shape of the radial cross section of the indwelling needle body 1, and the area of the radial cross section of the needle mounting portion 4 is smaller than the area of the radial cross section of the indwelling needle body 1.

[0053] The second abutting surface 41 is arranged at the bottom of the needle mounting portion 4, and the second abutting surface 41 is in the same plane as the first abutting surface 11. The needle mounting portion 4 is arranged in parallel with the skin. In order to reduce the distance between the needle 3 and the skin, the end of the needle 3 for mounting is arranged close to the second abutting surface 41.

[0054] The area of the radial cross section of the needle mounting portion 4 is smaller than the area of the radial cross section of the indwelling needle body 1, which realizes the transition from the indwelling needle body 1 to the needle 3 and reduces the stress concentration caused by directly arranging the needle 3 on the indwelling needle body 1.

[0055] The top of the second abutting surface 41 is also arranged in an arc-shaped arch shape, which facilitates the pressing of the hands of medical personnel.

[0056] A second liquid flow channel is formed in the needle mounting portion 4, one end of the second liquid flow channel communicates with the first liquid flow channel 13, and the other end of the second liquid flow channel communicates with the needle 3, which facilitates the smooth flow of the liquid in the anti-kinking indwelling needle structure, so as to realize the normal infusion function of the anti-kinking indwelling needle structure.

[0057] As Figure 1 shown, a transition round corner or chamfer is arranged at the connection between the indwelling needle body 1 and the needle mounting portion 4.

[0058] Specifically, the transition round corner or chamfer can make the stress distribution at the connection between the indwelling needle body 1 and the needle mounting portion 4 more uniform, which can effectively reduce stress concentration and prevent fatigue cracks from occurring at this place due to excessive stress.

[0059] In summary, an anti-kinking indwelling needle structure includes an indwelling needle body 1, a wing plate 2 and a needle 3. One side of the indwelling needle body 1 is a first abutting surface 11, the first abutting surface 11 is used for abutting against the skin; the wing plate 2 is arranged on the indwelling needle body 1, the wing plate 2 is used for abutting against the skin, and the surface of the wing plate 2 abutting against the skin is flush with the first abutting surface 11; the needle 3 is arranged on the indwelling needle body 1, and the needle 3 is arranged close to the first abutting surface 11.

[0060] The existing indwelling needle is only in abutment with the skin by the wing plate 2 in use, and there is a gap between the indwelling needle body 1 and the skin, while the anti-folding indwelling needle structure is in abutment with the skin by the first abutment surface 11 and the wing plate 2 in use, thereby greatly reducing the distance between the needle 3 arranged on the indwelling needle body 1 and the skin, and reducing the risk of folding of the indwelling needle in use, and solving the problem that the needle 3 of the existing indwelling needle is easy to be folded in use.

[0061] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0062] It should be noted that the present application introduces the specific structure and working principle of the anti-folding indwelling needle structure, but the application of the present application is not limited to an anti-folding indwelling needle structure, and can also be applied to the production and use of other similar workpieces.

[0063] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

[0064] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A kink-resistant indwelling needle structure, characterized by, include: The indwelling needle body has a first contact surface on one side, which is used to contact the skin; A wing plate is disposed on the body of the indwelling needle. The wing plate is used to abut against the skin, and the side of the wing plate that abuts against the skin is flush with the first abutment surface. The needle is disposed on the body of the indwelling needle, and the needle is disposed close to the first contact surface.

2. The kink-resistant catheter structure of claim 1, wherein The wing plate includes a first connector and a second connector. One end of the first connector is disposed on the indwelling needle body, and the other end is connected to the second connector. The second connector is used to abut against the skin, and the end of the second connector that abuts against the skin is flush with the first abutting surface.

3. The kink-resistant catheter structure of claim 2, wherein, The wing plate includes a contact element disposed at the end of the second connector that abuts against the skin. The cross-sectional area of ​​the contact element is larger than the cross-sectional area of ​​the second connector. The contact element is used to abut against the skin, and the side of the contact element that abuts against the skin is flush with the first abutting surface.

4. The kink-resistant catheter structure of claim 2, wherein The wing plate is provided in at least two parts, and the at least two wing plates are respectively provided on both sides of the indwelling needle body.

5. The kink-resistant catheter structure of claim 1, wherein The side of the indwelling needle body opposite to the first contact surface is the pressing surface, and the pressing surface is arched.

6. The kink-resistant catheter structure of claim 1, wherein, The indwelling needle body has a first fluid flow channel, which is connected to the flow channel of the needle tip.

7. The kink-resistant catheter structure of claim 6, wherein The anti-knotting indwelling needle structure includes a needle mounting part, one end of which is disposed at one end of the indwelling needle body, and the needle is disposed at the other end of the needle mounting part. The needle mounting part is coaxially disposed with the indwelling needle body. A second abutting surface is provided on one side of the needle mounting part. The second abutting surface is used to abut against the skin and is flush with the first abutting surface.

8. The kink-resistant catheter structure of claim 7, wherein, The radial cross-sectional area of ​​the needle mounting portion is smaller than the radial cross-sectional area of ​​the indwelling needle body.

9. The kink-resistant catheter structure of claim 7, wherein, The connection between the indwelling needle body and the needle mounting part is provided with a transition rounded corner or chamfer.

10. The kink-resistant catheter structure of claim 7, wherein, A second fluid flow channel is formed within the needle mounting portion, with one end of the second fluid flow channel communicating with the first fluid flow channel and the other end communicating with the needle.

Images