CN221357068U - Puncture-preventing deep vein puncture needle - Google Patents

Abstract

The utility model provides a deep vein puncture needle that is stab-proof, comprising: a needle, a hollow cylinder, a piston and a protection assembly. A nipple is provided on the top surface of the hollow cylinder, the needle is detachably sleeved on the nipple, and the piston is slidably arranged inside the hollow cylinder. The protection assembly comprises a connecting ring and a protective sleeve, the connecting ring is detachably sleeved on the outside of the needle plug of the needle, a guide block is provided on the outer wall of the connecting ring, and a positioning groove is provided on the outer wall of the guide block. The protective sleeve is movably sleeved on the outside of the connecting ring, a connecting hole is provided at the top of the protective sleeve, and a guide groove is provided on the inner wall of the protective sleeve. A first positioning protrusion and a second positioning protrusion are provided on the inner wall of the guide groove, and the spacing between the first positioning protrusion and the second positioning protrusion is greater than the length of the needle. The deep vein puncture needle that is stab-proof described in the utility model can adjust the position of the protective sleeve according to actual needs to prevent the needle from stabbing others.

Description

A puncture-proof deep vein puncture needle

Technical Field

The utility model belongs to the field of medical equipment, in particular to a puncture-proof deep vein puncture needle.

Background technique

Deep venous catheterization is a common catheter implantation procedure. Usually, medical staff will perform deep venous catheterization on the patient's jugular vein, subclavian vein or femoral vein according to actual needs, thereby implanting a catheter into the patient's body to facilitate long-term drug injection and nutrition supply to the patient.

When performing deep vein catheterization, medical staff need to use a deep vein puncture needle for auxiliary operation. However, since the needle of the deep vein puncture needle is long and has a sharp needle tip, the puncture needle placed on the operating table can easily stab medical staff and patients during the preparation for deep vein catheterization, causing unnecessary harm.

Utility Model Content

In view of this, the utility model aims to provide a puncture-proof deep vein puncture needle to achieve the purpose of preventing medical staff and patients from being punctured by the puncture needle.

In order to achieve the above object, the technical solution of the utility model is implemented as follows:

A puncture-proof deep vein puncture needle comprises: a needle, a hollow barrel, a piston and a protection assembly, wherein a nipple is arranged on the top surface of the hollow barrel, the needle is detachably sleeved on the nipple, and the piston is slidably arranged inside the hollow barrel; the protection assembly comprises a connecting ring and a protection sleeve, the connecting ring is detachably sleeved on the outside of the needle plug of the needle, a guide block is arranged on the outer side wall of the connecting ring, and a positioning groove is arranged on the outer side wall of the guide block; the protection sleeve is movably sleeved on the outside of the connecting ring, and the inner diameter of the protection sleeve is equal to the outer diameter of the hollow barrel; a protective sleeve is provided at the top end of the protective sleeve. A connecting hole allows the needle to pass through, and a guide groove for accommodating a guide block is provided on the inner side wall of the protective sleeve; a first positioning protrusion and a second positioning protrusion are provided on the inner side wall of the guide groove, the first positioning protrusion is located above the second positioning protrusion, and the spacing between the first positioning protrusion and the second positioning protrusion is greater than the length of the needle; when the protective sleeve descends and the first positioning protrusion enters the interior of the positioning groove, the needle extends out of the protective sleeve along the connecting hole, and when the protective sleeve rises and the second positioning protrusion enters the interior of the positioning groove, the needle enters the interior of the protective sleeve along the connecting hole.

Furthermore, a sealing ring is provided on the inner side wall of the connecting ring, the inner diameter of the sealing ring is equal to the outer diameter of the nipple, and the sealing ring is located between the bottom surface of the needle plug of the needle and the top surface of the empty tube.

Furthermore, a top end of the protective sleeve is provided with an avoidance cone surface.

Furthermore, a locking groove is provided on the inner side wall of the protective sleeve, and the locking groove is located below the second positioning protrusion. The length direction of the locking groove is perpendicular to the length direction of the guide groove, and one end of the locking groove is connected to the guide groove.

Furthermore, locking protrusions are provided on the top inner wall and the bottom inner wall of the locking groove, and locking grooves for accommodating the locking protrusions are provided on the top surface and the bottom surface of the guide block.

Furthermore, there are two guide blocks, and the two guide blocks are arranged on both sides of the connecting ring in a mirror-like manner.

Furthermore, the protective sleeve is made of a transparent high-molecular polyethylene material, and the connecting ring is made of an opaque high-molecular polyethylene material.

Compared with the prior art, the puncture-proof deep vein puncture needle described in the utility model has the following advantages:

(1) The utility model discloses a puncture-proof deep vein puncture needle, which can adjust the position of the protective sleeve according to actual needs, so as to isolate and protect the needle and prevent medical staff and patients from being punctured. When medical staff are preparing for deep vein catheterization, they can drive the protective sleeve to slide upward, and lock the position of the protective sleeve through the cooperation of the second positioning protrusion and the positioning groove, so that the needle enters the inside of the protective sleeve to prevent the needle from stabbing others; when the deep vein puncture needle is needed for assistance, the medical staff can drive the protective sleeve to slide downward, and lock the position of the protective sleeve through the cooperation of the first positioning protrusion and the positioning groove, so that the needle extends out of the protective sleeve and the deep vein catheterization operation is carried out smoothly.

(2) The utility model discloses a deep vein puncture needle that is puncture-proof, and a locking groove is provided on the inner wall of the protective sleeve. When the deep vein catheterization operation is completed, the medical staff can first slide the protective sleeve upward, and then rotate the protective sleeve to allow the guide block to enter the locking groove, and finally remove the needle, the connecting ring and the protective sleeve from the empty tube. At this time, the connecting ring and the protective sleeve can isolate and protect the removed needle, thereby preventing the discarded needle from puncturing the staff or damaging the medical waste recycling bag during the recycling process, thereby improving the convenience of deep vein puncture needle recycling.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

FIG1 is a schematic structural diagram of a puncture-proof deep vein puncture needle according to an embodiment of the utility model;

FIG2 is an exploded view of the puncture-proof deep vein puncture needle according to an embodiment of the utility model;

FIG3 is a cross-sectional view of the puncture-proof deep vein puncture needle according to an embodiment of the utility model (the needle protrudes from the outside of the protective sleeve);

FIG4 is a cross-sectional view of the puncture-proof deep vein puncture needle according to an embodiment of the utility model (the needle head enters the interior of the protective sleeve);

FIG5 is a cross-sectional view of the stab-proof deep vein puncture needle according to an embodiment of the utility model (the guide block enters the locking groove);

FIG6 is a schematic diagram of the structure of the needle and the connecting ring according to an embodiment of the utility model;

FIG7 is a cross-sectional view of the protective sleeve according to an embodiment of the utility model;

FIG8 is a cross-sectional view of the protective sleeve according to the embodiment of the utility model at another angle.

Description of reference numerals:

1-needle; 11-needle bolt; 2-empty cylinder; 21-nipple; 3-piston; 4-connecting ring; 41-sealing ring; 5-guide block; 51-positioning groove; 52-locking groove; 6-protective sleeve; 61-connecting hole; 62-guide groove; 621-first positioning protrusion; 622-second positioning protrusion; 63-locking groove; 631-locking protrusion; 64-avoidance cone.

Detailed ways

It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

A puncture-proof deep vein puncture needle is used for assisting puncture during deep vein catheterization. Figures 2 to 8 are schematic diagrams of the device. As shown in the figure, the puncture-proof deep vein puncture needle in this embodiment includes: a needle 1, a hollow barrel 2, a piston 3 and a protective assembly. Similar to common deep vein puncture needles, the device should be provided with a nipple 21 on the top surface of the hollow barrel 2. When assembling before use, medical staff should detachably cover the needle 1 on the nipple 21 so that the needle 1 will be connected to the internal space of the hollow barrel 2, and slide the piston 3 inside the hollow barrel 2 so that the pressure inside the hollow barrel 2 can be adjusted by sliding the piston 3.

In the prior art, the needle of a deep vein puncture needle can easily cause stab wounds to medical staff or patients. To solve this problem, the protection assembly in this embodiment may include a connecting ring 4 and a protective sleeve 6, wherein the connecting ring 4 is detachably sleeved on the outside of the needle plug 11 of the needle 1 (the bottom of the needle 1, the part used to connect the needle 1 with the nipple 21), and the protective sleeve 6 is movably sleeved on the outside of the connecting ring 4. A connecting hole 61 is provided at the top of the protective sleeve 6 to allow the needle 1 to pass through, and the inner diameter of the protective sleeve 6 should be equal to the outer diameter of the empty tube 2. When in use, medical staff can adjust the position of the protective sleeve 6 at different stages of deep vein catheterization, so as to avoid the needle 1 from stabbing others during the preparation stage of deep vein catheterization, and ensure that the needle 1 extends out of the protective sleeve 6 during the operation stage of deep vein catheterization.

It should be noted that, for the convenience of assembly, an external thread should be provided on the pin 11 of the needle 1, and an internal thread should be provided on the inner wall of the connecting ring 4. During assembly, the medical staff can sleeve the connecting ring 4 on the outside of the pin 11 of the needle 1, and realize the detachable connection between the connecting ring 4 and the pin 11 through the thread.

Optionally, in order to improve the sealing performance of the joint between the needle 1 and the nipple 21, as shown in FIG6 , a sealing ring 41 may be provided on the inner wall of the connecting ring 4 in this embodiment, and the inner diameter of the sealing ring 41 should be equal to the outer diameter of the nipple 21. When the needle 1, the connecting ring 4 and the nipple 21 are assembled, the sealing ring 41 will be located between the bottom surface of the needle plug 11 of the needle 1 and the top surface of the empty cylinder 2, thereby improving the sealing effect of the joint gap.

In order to facilitate the medical staff to adjust the position of the protective sleeve 6 and lock the protective sleeve 6 at the corresponding position, as shown in FIG6 , in this embodiment, a guide block 5 should be provided on the outer wall of the connecting ring 4, and a positioning groove 51 should be provided on the outer wall of the guide block 5. Correspondingly, as shown in FIG7 , a guide groove 62 for accommodating the guide block 5 should be provided on the inner wall of the protective sleeve 6, and a first positioning protrusion 621 and a second positioning protrusion 622 are provided on the inner wall of the guide groove 62, wherein the first positioning protrusion 621 is located above the second positioning protrusion 622, and the distance between the first positioning protrusion 621 and the second positioning protrusion 622 is greater than the length of the needle 1.

When the deep vein catheterization is in the preparation stage, the medical staff can drive the protective sleeve 6 to slide upward so that the second positioning protrusion 622 enters the interior of the positioning groove 51. As shown in Figure 4, at this time, the needle 1 will enter the interior of the protective sleeve 6 along the connecting hole 61, and the protective sleeve 6 will be locked under the cooperation of the second positioning protrusion 622 and the positioning groove 51, so as to prevent the needle 1 from stabbing others. When the deep vein catheterization is in the operation stage, the medical staff can drive the protective sleeve 6 to slide downward so that the first positioning protrusion 621 enters the interior of the positioning groove 51. As shown in Figure 3, at this time, the needle 1 extends out of the protective sleeve 6 along the connecting hole 61, so that the medical staff can insert the needle 1 into the patient's body, and assist the deep vein catheterization operation to proceed smoothly.

It should be noted that, in order to improve the movement stability of the protective sleeve 6, the guide block 5 described in this embodiment can be set to two, and the two guide blocks 5 should be arranged in a mirror image on both sides of the connecting ring 4. Correspondingly, two guide grooves 62 should also be provided on the inner side wall of the protective sleeve 6, so that the guide blocks 5 on both sides of the connecting ring 4 are respectively located inside the two guide grooves 62, thereby improving the guiding and limiting effect of the guide blocks 5 and the guide grooves 62 on the protective sleeve 6, so that the protective sleeve 6 can be stably lifted and slid.

Optionally, in order to prevent the presence of the protective sleeve 6 from obstructing the process of the needle 1 penetrating into the patient's body, an avoidance cone 64 is provided at the top of the protective sleeve 6. By setting the avoidance cone 64, the operable space and observation space in the needle 1 area of the device can be increased, making it convenient for medical staff to accurately insert the needle 1 into the catheterization site of the patient.

In actual work, medical staff need to recycle discarded medical equipment after deep vein catheterization. In order to prevent the discarded needle 1 from stabbing relevant staff and to prevent the needle 1 from damaging the recycling bag of medical waste, a locking groove 63 is provided on the inner wall of the protective sleeve 6 in this embodiment.

Specifically, as shown in Figures 7 and 8, the locking groove 63 should be located below the second positioning protrusion 622, the length direction of the locking groove 63 is perpendicular to the length direction of the guide groove 62, and one end of the locking groove 63 is connected to the guide groove 62. After the deep vein catheterization is completed, the medical staff can first slide the protective sleeve 6 upward, and then rotate the protective sleeve 6 to allow the guide block 5 to enter the locking groove 53 to form a structure as shown in Figure 5, so that the axial relative position of the protective sleeve 6 and the connecting ring 4 is prevented from changing by the cooperation of the locking groove 63 and the guide block 5. Next, the medical staff can continue to slide the protective sleeve 6 upward so that the needle 1, the connecting ring 4 and the protective sleeve 6 are removed from the empty tube 2 together. At this time, the connecting ring 4 and the protective sleeve 6 can isolate and protect the removed needle 1, thereby preventing the discarded needle 1 from stabbing the staff or damaging the medical waste recycling bag during the recycling process, thereby improving the convenience of recycling and processing of deep vein puncture needles.

In addition, to prevent the guide block 5 from being separated from the locking groove 63, a locking protrusion 631 may be provided on the top inner wall and the bottom inner wall of the locking groove 63, and a locking groove 52 for accommodating the locking protrusion 631 should be provided on the top surface and the bottom surface of the guide block 5. When the guide block 5 enters the locking groove 63, the locking protrusion 631 inside the locking groove 63 will enter the locking groove 52, and the protection sleeve 6 can be circumferentially limited by the cooperation of the locking protrusion 631 and the locking groove 52 to prevent the protection sleeve 6 from rotating, so that the discarded needle 1 and the connecting ring 4 always stay inside the protection sleeve 6 during the recycling process.

As an optional implementation of this embodiment, in order to improve the convenience of operation of the device and facilitate medical staff to observe the relative position of the connecting ring 4 and the protective sleeve 6, the protective sleeve 6 can be made of a transparent high-molecular polyethylene material, and the connecting ring 4 can be made of an opaque high-molecular polyethylene material. Since the protective sleeve 6 is made of a transparent material and the connecting ring 4 is made of an opaque material, when the medical staff adjusts the position of the transparent sleeve 6, the connecting ring 4 can be directly seen through the protective sleeve 6, thereby reducing the difficulty of adjusting the position of the protective sleeve 6 and facilitating actual use.

The effects of the above scheme are described below:

This embodiment provides a puncture-proof deep vein puncture needle, which can adjust the position of the protective sleeve according to actual needs, thereby preventing the needle from stabbing others during the preparation stage of deep vein catheterization, and exposing the needle during the operation stage of deep vein catheterization, which is convenient for deep vein catheterization surgery. Secondly, the device can fix the position of the protective sleeve through the cooperation of the first positioning protrusion, the second positioning protrusion and the positioning groove to prevent abnormal movement of the protective sleeve. In addition, the device can also isolate and protect the discarded needles after the deep vein catheterization surgery through the locking groove, thereby preventing the discarded needles from stabbing staff or medical waste recycling bags, and improving the convenience of recycling and processing of deep vein puncture needles.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A deep vein puncture needle for preventing puncture, characterized in that it comprises: a needle (1), a hollow cylinder (2), a piston (3) and a protection assembly, wherein a nipple (21) is provided on the top surface of the hollow cylinder (2), the needle (1) is detachably sleeved on the nipple (21), and the piston (3) is slidably arranged inside the hollow cylinder (2); the protection assembly comprises a connecting ring (4) and a protection sleeve (6), the connecting ring (4) is detachably sleeved on the outside of the needle plug (11) of the needle (1), a guide block (5) is provided on the outer side wall of the connecting ring (4), and a positioning groove (51) is provided on the outer side wall of the guide block (5); the protection sleeve (6) is movably sleeved on the outside of the connecting ring (4), and the inner diameter of the protection sleeve (6) is equal to the outer diameter of the hollow cylinder (2); a groove is provided at the top of the protection sleeve (6) to allow the needle (1) to pass through A connecting hole (61) is formed on the inner side wall of the protective sleeve (6), and a guide groove (62) for accommodating the guide block (5) is provided; a first positioning protrusion (621) and a second positioning protrusion (622) are provided on the inner side wall of the guide groove (62); the first positioning protrusion (621) is located above the second positioning protrusion (622), and the distance between the first positioning protrusion (621) and the second positioning protrusion (622) is greater than the length of the needle (1); when the protective sleeve (6) descends and the first positioning protrusion (621) enters the interior of the positioning groove (51), the needle (1) extends out of the protective sleeve (6) along the connecting hole (61); when the protective sleeve (6) ascends and the second positioning protrusion (622) enters the interior of the positioning groove (51), the needle (1) enters the interior of the protective sleeve (6) along the connecting hole (61). 2. A puncture-proof deep vein puncture needle according to claim 1, characterized in that a sealing ring (41) is provided on the inner wall of the connecting ring (4), the inner diameter of the sealing ring (41) is equal to the outer diameter of the nipple (21), and the sealing ring (41) is located between the bottom surface of the needle plug (11) of the needle (1) and the top surface of the empty tube (2). 3. The puncture-proof deep vein puncture needle according to claim 1, characterized in that a avoiding cone surface (64) is provided at the top end of the protective sleeve (6). 4. A stab-proof deep vein puncture needle according to claim 1, characterized in that: a locking groove (63) is provided on the inner wall of the protective sleeve (6), and the locking groove (63) is located below the second positioning protrusion (622), the length direction of the locking groove (63) is perpendicular to the length direction of the guide groove (62), and one end of the locking groove (63) is connected to the guide groove (62). 5. A puncture-proof deep vein puncture needle according to claim 4, characterized in that: locking protrusions (631) are provided on the top inner wall and the bottom inner wall of the locking groove (63), and locking grooves (52) for accommodating the locking protrusions (631) are provided on the top surface and the bottom surface of the guide block (5). 6. A puncture-proof deep vein puncture needle according to claim 1, characterized in that: there are two guide blocks (5), and the two guide blocks (5) are arranged on both sides of the connecting ring (4) in a mirror image. 7. The puncture-proof deep vein puncture needle according to claim 1, characterized in that the protective sleeve (6) is made of transparent high-molecular polyethylene material, and the connecting ring (4) is made of opaque high-molecular polyethylene material.