Protective component of arterial blood gas needle

Abstract

The utility model relates to the technical field of medical supplies, and discloses a protection component of an arterial blood gas needle, which comprises a needle body, a needle head arranged at the end part of the needle body, an inner cylinder arranged on the outer wall of the needle body and capable of being detached and separated from the needle body; the outer cylinder is arranged on the outer side of the inner cylinder and can slide relative to the inner cylinder so as to cover and protect the needle head; the connecting column is fixedly mounted on the outer wall of the inner cylinder, the connecting column and the inner cylinder are integrally formed, and the other end of the connecting column penetrates through and extends to the outer side of the outer cylinder; the limiting assembly is arranged on the outer side of the connecting column and used for limiting the displacement position of the outer cylinder; and the protection mechanism is arranged on the outer cylinder and can rotate and move relative to the outer cylinder so as to seal the needle point of the needle head. According to the protection component of the arterial blood gas needle, the needle head and the needle tip of the arterial blood gas needle can be protected, and safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to a protective component for an arterial blood gas needle. Background Art

[0002] The arterial blood gas needle is used for sampling blood from the artery, and comprises a syringe, a needle tube and a push rod. The syringe has a chamber, the push rod is inserted in the chamber, and along the rear end of the syringe, the front end of the syringe has a connecting column; the rear end of the needle tube has a connecting seat, the front end of the needle tube has a needle tip, and the connecting seat is sleeved in the connecting column; when not in use, the needle tube is outer-mounted with a needle cap to protect the needle tube; when blood sampling is required, the needle cap is removed from the needle tube, the needle tip of the needle tube is inserted into the artery, and the arterial blood is drawn into the chamber by moving the push rod; after blood drawing is completed, the needle tube is pulled off the syringe, and a sealing cap is sleeved on the connecting column to seal the chamber to prevent arterial blood from contacting oxygen.

[0003] During use, it was found that after blood drawing, a rubber block is often used to seal the tip of the arterial blood gas needle. However, due to the small size of the rubber block, the needle can easily pierce or deviate when entering the rubber block, which can easily cause safety accidents. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The utility model aims to provide a protective component for an arterial blood gas needle, which can protect the needle head and the needle tip of an arterial blood gas needle to avoid safety accidents.

[0006] (II) Technical solution

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A protective component for an arterial blood gas needle comprises a needle body and a needle head arranged at the end of the needle body.

[0009] The inner cylinder is arranged on the outer wall of the needle body and can be detached from the needle body;

[0010] The outer cylinder is arranged outside the inner cylinder and can slide relative to the inner cylinder to cover and protect the needle;

[0011] The connecting column is fixedly mounted on the outer wall of the inner cylinder, and is integrally formed with the inner cylinder, and the other end of the connecting column penetrates and extends to the outside of the outer cylinder;

[0012] A limit assembly is arranged on the outside of the connecting column and is used to limit the displacement position of the outer cylinder;

[0013] The protection mechanism is arranged on the outer cylinder and can be relatively rotated and displaced with the outer cylinder to seal the needle tip of the needle.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, a ridge is fixedly mounted on the inner wall of the inner tube, wherein the ridge is integrally formed with the inner tube, the number of the ridges is not less than six, and they are uniformly distributed in a circular shape, and the other side surface of the ridge contacts the outer wall of the needle body.

[0016] Furthermore, the outer wall of the inner cylinder is processed with vertically distributed sliding parts, wherein a sliding seat adapted to the sliding parts is fixedly arranged on the inner wall of the outer cylinder, and the outer cylinder can slide and displace along the length direction of the inner cylinder through the sliding parts and the sliding seat.

[0017] Furthermore, the outer wall of the outer cylinder is processed with vertically distributed sliding holes, wherein the connecting column can be located in the sliding hole and displaced.

[0018] Furthermore, the limit assembly includes:

[0019] The pressing column is sleeved on the outside of the connecting column and can move relative to the connecting column;

[0020] An elastic member is disposed between the pressing column and the inner cylinder and is located outside the connecting column;

[0021] The connecting seat is fixedly installed on the outer side of the pressing column and is integrally formed with the pressing column;

[0022] a limit block, fixedly mounted on a surface of the connection base on a side away from the elastic member, and the number of the limit blocks is not less than two; and

[0023] The limiting grooves are arranged on the inner wall of the outer cylinder, and the number and distribution positions of the limiting grooves are matched with the limiting blocks.

[0024] Furthermore, the two limiting grooves are respectively located on the upper and lower sides of the sliding hole.

[0025] Furthermore, the protection mechanism includes:

[0026] The connecting ring is fixedly mounted on the outer cylinder and is integrally formed with the outer cylinder;

[0027] An articulated seat, fixedly mounted on the connecting ring;

[0028] A sealing cover is hinged on the hinge seat and can be rotated and displaced along the end of the hinge seat; and

[0029] The rubber pad is fixedly mounted on the surface of the sealing cover.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0032] The utility model adopts the technical means of inner cylinder, outer cylinder, connecting column, limiting assembly and protection mechanism, so during use, the protection component and the needle body can be connected to each other through the inner cylinder. After blood drawing is completed, the outer cylinder is slid and moved to the outside of the needle head to cover the needle head for protection. With the use of connecting column and limiting assembly, the position of the outer cylinder can be effectively fixed and limited, and finally the needle head can be blocked by the protection mechanism, which can not only reduce the risk of introducing bacteria or other pathogens during arterial blood gas sampling and reduce the probability of infection, but also avoid medical staff from being accidentally injured during use, reduce the risk of infection caused by medical staff contacting blood, effectively solve the technical problems of the protection component of the arterial blood gas needle in the prior art, and thus achieve the technical effect of protecting the safety of medical staff and patients and reducing the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the connection structure between the needle body and the needle tip of the utility model;

[0034] Figure 2 This is a schematic diagram of the connection structure between the needle and the inner tube of the utility model;

[0035] Figure 3 It is a schematic diagram of a partial cross-sectional connection structure of the inner cylinder and the outer cylinder of the utility model;

[0036] Figure 4 For this utility model Figure 3 A in the enlarged view;

[0037] Figure 5 It is a schematic diagram of the connection structure of part of the outer cylinder and the protective mechanism of the utility model.

[0038] In the figure: 1. needle body; 2. needle head; 3. inner tube; 4. outer tube; 5. connecting column; 6. limiting assembly; 61. pressing column; 62. elastic member; 63. connecting seat; 64. limiting block; 65. limiting groove; 7. protective mechanism; 71. connecting ring; 72. hinge seat; 73. sealing cover; 74. rubber pad; 8. sliding hole; 9. convex ridge. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Combination Figure 1-Figure 5 As shown, a protective component of an arterial blood gas needle of the utility model comprises a needle body 1 and a needle head 2 arranged at the end of the needle body 1.

[0041] The inner tube 3 is arranged on the outer wall of the needle body 1, and can be detached from the needle body 1;

[0042] The outer tube 4 is disposed outside the inner tube 3 and can slide relative to the inner tube 3 to cover and protect the needle 2;

[0043] The connecting column 5 is fixedly mounted on the outer wall of the inner cylinder 3, and is integrally formed with the inner cylinder 3, and the other end of the connecting column 5 penetrates and extends to the outside of the outer cylinder 4;

[0044] The limiting assembly 6 is arranged on the outer side of the connecting column 5 and is used to limit the displacement position of the outer cylinder 4;

[0045] The protection mechanism 7 is disposed on the outer tube 4 and can be relatively rotated and displaced with the outer tube 4 to seal the needle tip of the needle 2 .

[0046] During use, the protective component and the needle body 1 can be connected to each other through the inner tube 3. After the blood is drawn, the outer tube 4 is slid and moved to the outside of the needle 2 to cover the needle 2 for protection. With the use of the connecting column 5 and the limiting component 6, the position of the outer tube 4 can be effectively fixed and limited. Finally, the needle 2 is blocked by the protective mechanism 7. The inner tube 3 and the outer tube 4 are both made of transparent PP material, that is, polypropylene, which is light, tough and strong, making it light and durable.

[0047] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 , Figure 3 As shown; a ridge 9 is fixedly mounted on the inner wall of the inner tube 3, wherein the ridge 9 and the inner tube 3 are integrally formed, the number of the ridges 9 is not less than six, and they are uniformly distributed in a ring shape, and the other side surface of the ridge 9 is in contact with the outer wall of the needle body 1, wherein the ridge 9 is made of rubber material, which is light, has good toughness and a large friction coefficient, and is not easy to fall off when it is sleeved on the outside of the needle body 1, and the inner tube 3 and the needle body 1 are connected by friction.

[0048] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 , Figure 3 As shown; vertically distributed sliding parts are processed on the outer wall of the inner cylinder 3, wherein a sliding seat adapted to the sliding parts is fixedly arranged on the inner wall of the outer cylinder 4, and the outer cylinder 4 can slide and move along the length direction of the inner cylinder 3 through the sliding parts and the sliding seats, and sliding grooves and sliding blocks are arranged, so that when the outer cylinder 4 slides along the length direction of the inner cylinder 3, it can slide along the length direction of the sliding parts through the sliding seats, thereby ensuring the stability of the overall movement process, and the overall movement process is not prone to deviation.

[0049] In a preferred embodiment, the present invention can be further configured as follows: Figure 3 , Figure 4 As shown; vertically distributed sliding holes 8 are processed on the outer wall of the outer cylinder 4, wherein the connecting column 5 can be displaced in the sliding hole 8. The sliding hole 8 is provided to ensure that the connecting column 5 can move in the sliding hole 8 when the outer cylinder 4 is displaced, and further ensure that the travel of the outer cylinder 4 is not hindered when it is moving.

[0050] In a preferred embodiment, the present invention can be further configured as follows: Figure 3 , Figure 4 As shown; the limit assembly 6 includes:

[0051] The pressing column 61 is sleeved on the outer side of the connecting column 5 and can be relatively displaced with the connecting column 5;

[0052] The elastic member 62 is disposed between the pressing column 61 and the inner tube 3 and is located outside the connecting column 5;

[0053] The connecting seat 63 is fixedly mounted on the outer side of the pressing column 61 and is integrally formed with the pressing column 61;

[0054] A limit block 64 is fixedly mounted on a surface of the connection base 63 away from the elastic member 62, and the number of the limit block 64 is not less than two; and

[0055] The limiting grooves 65 are provided on the inner wall of the outer cylinder 4, and the number and distribution position thereof are matched with the limiting blocks 64, wherein the elastic member 62 is preferably a spring. When limiting the outer cylinder 4, the pressing column 61 can be pressed, wherein the pressing column 61 will drive the connecting seat 63 and the limiting block 64 to move synchronously, so that the limiting block 64 is separated from the limiting groove 65. At this time, the outer cylinder 4 can be slid. After sliding to the specified position, the pressing column 61 is released, and the elastic member 62 returns to its original state, so that the limiting block 64 is plugged into the inner side of the matching limiting groove 65, and the position of the outer cylinder 4 can be limited.

[0056] In a preferred embodiment, the present invention can be further configured as follows: Figure 3, Figure 4 As shown; the two limit grooves 65 are respectively located on the upper and lower sides of the slide hole 8, wherein the position of the limit groove 65 is further limited, and when the outer cylinder 4 is placed in different positions, the limit block 64 can be inserted into the corresponding limit groove 65.

[0057] In a preferred embodiment, the present invention can be further configured as follows: Figure 2 , Figure 5 As shown; the protection mechanism 7 comprises:

[0058] The connecting ring 71 is fixedly mounted on the outer cylinder 4 and is integrally formed with the outer cylinder 4;

[0059] The hinge seat 72 is fixedly mounted on the connecting ring 71;

[0060] A sealing cover 73 is hinged on the hinge seat 72 and can be rotated and displaced along the end of the hinge seat 72; and

[0061] The rubber pad 74 is fixedly mounted on the surface of the sealing cover 73, and the hinge seat 72 can be fixed on the outer tube 4 through the connecting ring 71, wherein the sealing cover 73 can rotate according to the hinge seat 72 as the origin during rotation, and the needle tip of the needle 2 can be inserted into the rubber pad 74 during the rotation process, so that the needle tip can be sealed to prevent arterial blood from contacting oxygen. At the same time, it is safer during sealing and will not cause accidental injury to medical staff.

[0062] The specific working principle of the protective component of the arterial blood gas needle of the utility model is as follows:

[0063] When drawing blood, the outer tube 4 is slid to the outside of the inner tube 3, so that the needle 2 is exposed outside, and the blood drawing operation can be performed on the patient;

[0064] After the blood is drawn, the pressing column 61 is pressed, and the elastic member 62 is in a compressed state. The pressing column 61 can drive the connecting seat 63 and the limit block 64 to move synchronously, so that the limit block 64 is disengaged from the inner side of the limit groove 65, and then the outer cylinder 4 is slid toward the side of the needle 2. When the outer cylinder 4 completely covers the needle 2, the pressing column 61 can be released, and the elastic member 62 is restored to its original state, so that the connecting seat 63 and the limit block 64 can be pushed toward the side of the matching limit groove 65, so that the limit block 64 is snap-fitted into the matching limit groove 65. It should be noted that when the outer cylinder 4 is located on the outside of the inner cylinder 3, the upper limit block 64 is plugged into the inner side of the upper limit groove 65, and when the outer cylinder 4 is located on the outside of the needle 2, the lower limit block 64 is plugged into the inner side of the lower limit groove 65.

[0065] Subsequently, with the hinge seat 72 as the origin, the sealing cover 73 is rotated and buckled onto the end of the outer tube 4, so that the needle 2 can be inserted into the rubber pad 74, which can seal the needle tip to prevent arterial blood from contacting oxygen. The protective component arranged on the arterial blood gas needle can not only reduce the risk of introducing bacteria or other pathogens during arterial blood gas sampling and reduce the probability of infection, but also prevent medical staff from being accidentally injured during use and reduce the risk of infection caused by medical staff contacting blood.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective component for an arterial blood gas needle, comprising a needle body (1) and a needle head (2) arranged at the end of the needle body (1), characterized in that: The inner tube (3) is arranged on the outer wall of the needle body (1), and can be detached from the needle body (1); The outer tube (4) is arranged outside the inner tube (3) and can slide relative to the inner tube (3) to cover and protect the needle (2); A connecting column (5) is fixedly mounted on the outer wall of the inner cylinder (3), is integrally formed with the inner cylinder (3), and has the other end passing through and extending to the outside of the outer cylinder (4); A limiting assembly (6) is arranged on the outside of the connecting column (5) and is used to limit the displacement position of the outer cylinder (4); The protection mechanism (7) is arranged on the outer tube (4) and can be relatively rotated and displaced with the outer tube (4) to seal the needle tip of the needle (2).

2. The protective component of an arterial blood gas needle according to claim 1, characterized in that: A convex ridge (9) is fixedly mounted on the inner wall of the inner tube (3), wherein the convex ridge (9) and the inner tube (3) are integrally formed, the number of the convex ridges (9) is not less than six, and they are distributed in an annular shape and at equal intervals as a whole, and the other side surface of the convex ridge (9) is in contact with the outer wall of the needle body (1).

3. The protective component of an arterial blood gas needle according to claim 1, characterized in that: The outer wall of the inner cylinder (3) is processed with sliding parts distributed vertically, wherein a sliding seat matched with the sliding parts is fixedly arranged on the inner wall of the outer cylinder (4), and the outer cylinder (4) can slide and move along the length direction of the inner cylinder (3) through the sliding parts and the sliding seat.

4. The protective component of an arterial blood gas needle according to claim 1, characterized in that: The outer wall of the outer cylinder (4) is processed with vertically distributed sliding holes (8), wherein the connecting column (5) can be located in the sliding hole (8) and displaced.

5. The protective component of an arterial blood gas needle according to claim 4, characterized in that: The limiting component (6) comprises: A pressing column (61) is sleeved on the outer side of the connecting column (5) and can be relatively displaced with the connecting column (5); An elastic member (62) is disposed between the pressing column (61) and the inner cylinder (3), and is located outside the connecting column (5); The connecting seat (63) is fixedly mounted on the outer side of the pressing column (61) and is integrally formed with the pressing column (61); Limiting blocks (64) are fixedly mounted on a side surface of the connecting seat (63) away from the elastic member (62), and the number of the limiting blocks (64) is not less than two; and The limiting grooves (65) are formed on the inner wall of the outer cylinder (4), and the number and distribution positions of the limiting grooves (65) are matched with those of the limiting blocks (64).

6. The protective component of an arterial blood gas needle according to claim 5, characterized in that: The two limiting grooves (65) are respectively located at the upper and lower sides of the sliding hole (8).

7. The protective component of an arterial blood gas needle according to claim 1, characterized in that: The protection mechanism (7) comprises: A connecting ring (71) is fixedly mounted on the outer cylinder (4) and is integrally formed with the outer cylinder (4); A hinged seat (72) is fixedly mounted on the connecting ring (71); A sealing cover (73) is hinged on the hinge seat (72) and can be rotated and displaced along the end of the hinge seat (72); and The rubber pad (74) is fixedly mounted on the surface of the sealing cover (73).

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