CN221713153U - Needles - Google Patents

Abstract

The present application relates to a needle, which belongs to the field of medical device technology. The needle includes a needle body, an inner tube and an outer tube, one end of the inner tube is connected to the needle body, the other end of the inner tube is adapted to the insertion of the needle tube, the outer tube is sleeved on the outside of the inner tube, and the outer tube moves relative to the inner tube along a first direction, and the first direction is the length direction of the needle body. The needle provided in the embodiment of the present application can reduce the risk of medical staff being stabbed or infected.

Description

Needles

Technical Field

The utility model relates to the technical field of medical devices, in particular to a needle.

Background Art

The needle in medical devices generally refers to the hollow metal needle that can be freely loaded and unloaded at the tip of the syringe. For the sake of safety and hygiene, the needle should be discarded after use and cannot be reused. After the injection or aspiration is completed, the needle is pulled out of the patient's body, the needle and the syringe are separated, and then the garbage is disposed of separately. During the period from the removal of the needle to the time the medical staff discards the needle, there is a problem of needle injuring medical staff and increasing the risk of medical staff being infected.

Utility Model Content

The purpose of the present application is to provide a needle to address the above-mentioned problem, thereby reducing the risk of medical personnel being stabbed and improving the above-mentioned problem.

The present application provides a needle, comprising a needle body, an inner tube and an outer tube, wherein one end of the inner tube is connected to the needle body, and the other end of the inner tube is adapted for insertion of the needle tube, and the outer tube is sleeved on the outside of the inner tube, and the outer tube moves relative to the inner tube along a first direction, and the first direction is the length direction of the needle body.

In the technical solution of the embodiment of the present application, during the injection or adsorption process, most of the outer tube is sleeved on the outside of the inner tube, exposing the needle body so that the needle body can smoothly penetrate the patient's skin. After the injection or adsorption treatment process is completed, the medical staff can first pull out a part of the needle body from the patient's body, and then push the outer tube to move toward the needle body along the first direction. The process of pulling out the needle and pushing the outer tube to move is carried out simultaneously, so that the outer tube gradually covers the pulled out needle body. When the needle body is completely pulled out of the patient's body, the outer tube is able to completely cover the needle body, thereby reducing the risk of medical staff being stabbed by the needle of the needle during the process of separating the needle and the syringe and discarding the needle, and reducing the risk of medical staff being infected by viruses, bacteria, etc. carried by the needle body.

In some embodiments, the outer circumferential surface of the inner cylinder is in contact with the inner wall of the outer cylinder.

In the technical solution of the embodiment of the present application, the outer circumferential surface of the inner cylinder is in contact with the inner wall of the outer cylinder, and the inner cylinder can limit the moving direction of the outer cylinder, so that the outer cylinder can move stably along the surface of the inner cylinder, reducing the risk of deviation of the moving direction of the outer cylinder.

In some embodiments, the inner wall of the outer cylinder is provided with a limiting groove, and the outer wall of the inner cylinder is provided with a positioning member, and the positioning member is located in the limiting groove.

In the technical solution of the embodiment of the present application, the positioning member is located in the limiting groove, and the positioning member can limit the movement distance of the outer cylinder on the outer wall of the inner cylinder, thereby reducing the risk of the outer cylinder being separated from the inner cylinder.

In some embodiments, the positioning member is made of an elastic material, and the positioning member abuts against the bottom wall of the limiting groove. A first positioning hole and a second positioning hole are also provided in the positioning member and the limiting groove. The first positioning hole and the second positioning hole are arranged sequentially along a first direction, and the positioning member can pass through the first positioning hole or the second positioning hole.

In the technical solution of the embodiment of the present application, the positioning piece is made of an elastic material, and the positioning piece is in contact with the bottom wall of the limiting groove. The inner tube can apply an elastic force to the outer tube through the positioning piece so that the relative position of the inner tube and the outer tube can be kept fixed in the absence of external force, thereby reducing the risk of the outer tube sliding on its own and affecting the puncture operation; the outer tube has an idle state and a shielding state. When performing injection and adsorption operations, the outer tube is in an idle state, and the positioning piece is inserted into the first positioning hole. At this time, most of the outer tube is sleeved on the outside of the inner tube to expose the needle; during the process of separating the needle from the syringe and discarding the needle, the outer tube is in a shielding state, the positioning piece is inserted into the second positioning hole, and the outer tube shields the needle, thereby reducing the risk of medical staff being stabbed by the needle.

In some embodiments, there are multiple positioning members, and the multiple positioning members are arranged in sequence along the circumference direction of the outer circumferential surface of the inner cylinder. The number of the first positioning holes and the second positioning holes are both multiple, and the multiple first positioning holes correspond one-to-one to the multiple positioning members, and the multiple second positioning holes correspond one-to-one to the multiple positioning members.

In the technical solution of the embodiment of the present application, there are multiple positioning members, so that the inner cylinder can be positioned on the outer cylinder through multiple positioning members, and the fixing effect of the relative position of the inner cylinder and the outer cylinder is better; the number of the first positioning hole and the second positioning hole are both multiple, so that each positioning member can be inserted into the first positioning hole or the second positioning hole.

In some embodiments, the limiting groove has two side walls that are opposite to each other and parallel to the first direction, and two of the positioning members located at the head and the tail of the plurality of positioning members arranged in sequence are in contact with the two side walls of the limiting groove respectively.

In the technical solution of the embodiment of the present application, two positioning members located at the head and tail of the multiple positioning members arranged in sequence are respectively in contact with the two side walls of the limiting groove. The contact between the positioning members and the limiting groove limits the relative rotation of the inner tube and the outer tube. On the one hand, it makes the moving direction of the positioning member correspond to the position of the first positioning hole and the second positioning hole. On the other hand, it reduces the risk of the relative rotation of the inner tube and the outer tube driving the needle body to rotate and causing pain to the patient.

In some embodiments, a positive pressure joint is also provided inside the inner cylinder.

In the technical solution of the embodiment of the present application, a positive pressure joint is also provided on the inner side of the inner tube. During the treatment process, it is sometimes necessary to insert the needle into the patient's body and replace the syringe. After the syringe is separated from the needle head, the positive pressure needle head can generate instantaneous positive pressure in the needle body, thereby reducing the risk of the patient's body fluids flowing out of the inner tube through the needle body, leading to the transmission of viruses or bacteria that may be contained in the body fluids.

In some embodiments, in the first direction, the size of the outer tube is not larger than that of the inner tube, and the size of the outer tube is larger than that of the needle body.

In the technical solution of the embodiment of the present application, the size of the outer tube is not larger than that of the inner tube, so that the outer tube will not contact the syringe, reducing the risk of wear of the outer tube and the syringe due to contact; the size of the outer tube is larger than the needle body, so that the outer tube can cover the needle head, reducing the risk of medical staff being stabbed.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the structure of a needle provided in some embodiments of the present application;

Fig. 2 is a cross-sectional view of the A-A position in Fig. 1;

Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1 .

Icon: 1-needle body, 2-inner cylinder, 20-positioning piece, 3-outer cylinder, 30-limiting groove, 31-first positioning hole, 32-second positioning hole, 4-positive pressure connector, X-first direction.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

The term "and/or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

The term "multiple" as used in the present application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

According to some embodiments of the present application, as shown in Figures 1 and 2, the present application provides a needle, including a needle body 1, an inner tube 2 and an outer tube 3, one end of the inner tube 2 is connected to the needle body 1, and the other end of the inner tube 2 is adapted for the insertion of the needle tube, the outer tube 3 is sleeved on the outside of the inner tube 2, and the outer tube 3 moves relative to the inner tube 2 along a first direction X, and the first direction X is the length direction of the needle body 1.

The end of the needle body 1 facing away from the inner tube 2 is the needle tip.

The X direction shown in the figure is the first direction X.

The inner tube 2 can be sleeved and closely attached to the outer wall of the syringe.

The needle provided in the embodiment of the present application can be used, but is not limited to, for puncture treatment of a patient's joint cavity.

The outer tube 3 may be made of a transparent material, so that the user can observe the needle body 1 and the condition of the patient's skin facing the needle body 1 .

During the injection or adsorption process, most of the outer tube 3 is sleeved on the outside of the inner tube 2, exposing the needle body 1, so that the needle body 1 can smoothly penetrate the patient's skin. After the injection or adsorption treatment process is completed, the medical staff can first pull out a part of the needle body 1 from the patient's body, and then push the outer tube 3 to move toward the needle body 1 along the first direction X. The process of pulling out the needle and pushing the outer tube 3 to move is carried out simultaneously, so that the outer tube 3 gradually covers the pulled out needle body 1. When the needle body 1 is completely pulled out of the patient's body, the outer tube 3 is able to completely cover the needle body 1, thereby reducing the risk of medical staff being stabbed by the needle of the needle body 1 during the process of separating the needle from the syringe and discarding the needle, and reducing the risk of medical staff being infected by viruses, bacteria, etc. carried by the needle body 1.

Optionally, as shown in FIG. 2 and FIG. 3 , the outer circumferential surface of the inner tube 2 is in contact with the inner wall of the outer tube 3 .

The outer circumferential surface of the inner cylinder 2 fits with the inner wall of the outer cylinder 3. The inner cylinder 2 can limit the moving direction of the outer cylinder 3, so that the outer cylinder 3 can stably move along the surface of the inner cylinder 2, reducing the risk of the outer cylinder 3 moving direction deviation.

Optionally, as shown in FIG. 2 and FIG. 3 , a limiting groove 30 is provided on the inner wall of the outer cylinder 3 , and a positioning member 20 is provided on the outer wall of the inner cylinder 2 , and the positioning member 20 is located in the limiting groove 30 .

The positioning member 20 may protrude from the outer circumferential surface of the inner tube 2 .

The positioning member 20 is located in the limiting groove 30 , and the positioning member 20 can limit the movement distance of the outer tube 3 on the outer wall of the inner tube 2 , thereby reducing the risk of the outer tube 3 being separated from the inner tube 2 .

Optionally, as shown in Figures 1 and 2, the positioning member 20 is made of an elastic material, and the positioning member 20 abuts against the bottom wall of the limiting groove 30. A first positioning hole 31 and a second positioning hole 32 are also provided in the positioning member 20 and the limiting groove 30. The first positioning hole 31 and the second positioning hole 32 are arranged in sequence along the first direction X, and the positioning member 20 can pass through the first positioning hole 31 or the second positioning hole 32.

The material of the positioning member 20 may be, but is not limited to, elastic materials such as rubber, resin, and spring.

Compared with the second positioning hole 32 , the first positioning hole 31 is closer to the inner tube 2 for connecting one end of the syringe.

The positioning piece 20 is made of an elastic material, and the positioning piece 20 abuts against the bottom wall of the limiting groove 30. The inner tube 2 can apply an elastic force to the outer tube 3 through the positioning piece 20 so that the relative positions of the inner tube 2 and the outer tube 3 can be kept fixed in the absence of external force, thereby reducing the risk of the outer tube 3 sliding on its own and affecting the puncture operation; the outer tube 3 has an idle state and a shielding state. When performing injection and adsorption operations, the outer tube 3 is in an idle state, and the positioning piece 20 is inserted into the first positioning hole 31. At this time, most of the outer tube 3 is sleeved on the outside of the inner tube 2, so that the needle can be exposed; in the process of separating the needle from the syringe and discarding the needle, the outer tube 3 is in a shielding state, and the positioning piece 20 is inserted into the second positioning hole 32. The outer tube 3 shields the needle, thereby reducing the risk of medical staff being stabbed by the needle body 1.

Optionally, as shown in Figures 1 and 3, there are multiple positioning members 20, and the multiple positioning members 20 are arranged in sequence along the circumferential direction of the outer surface of the inner tube 2. The number of first positioning holes 31 and second positioning holes 32 are both multiple, and the multiple first positioning holes 31 correspond one-to-one to the multiple positioning members 20, and the multiple second positioning holes 32 correspond one-to-one to the multiple positioning members 20.

The number of the plurality of positioning members 20 may be two, three, four, five, six or more.

There are multiple positioning members 20, so that the inner cylinder 2 can be positioned relative to the outer cylinder 3 through multiple positioning members 20, and the fixing effect of the relative position of the inner cylinder 2 and the outer cylinder 3 is better; there are multiple first positioning holes 31 and second positioning holes 32, so that each positioning member 20 can be inserted into the first positioning hole 31 or the second positioning hole 32.

Optionally, as shown in FIG. 3 , the limiting groove 30 has two side walls that are opposite and parallel to the first direction X, and the first and last two positioning members 20 of the plurality of positioning members 20 arranged in sequence are in contact with the two side walls of the limiting groove 30 respectively.

The side wall of the limiting groove 30 mentioned in the present application is perpendicular to the circumferential direction of the outer cylinder 3 .

The two positioning members 20 located at the head and tail of the multiple positioning members 20 arranged in sequence are in contact with the two side walls of the limiting groove 30 respectively. The contact between the positioning members 20 and the limiting groove 30 limits the relative rotation of the inner tube 2 and the outer tube 3. On the one hand, the moving direction of the positioning member 20 is kept corresponding to the position of the first positioning hole 31 and the second positioning hole 32. On the other hand, the risk of the inner tube 2 and the outer tube 3 rotating relative to each other and driving the needle body 1 to rotate and causing pain to the patient is reduced.

Optionally, as shown in FIG. 2 , a positive pressure joint 4 is further provided inside the inner tube 2 .

The positive pressure connector 4 is a positive pressure infusion connector, which is a type of needleless connection system (divided into positive pressure, negative pressure, and equal pressure according to function). In the Intravenous Infusion Therapy Nursing, it is mentioned that when the syringe is pulled out from the positive pressure connector 4 after each infusion, the liquid in the connector automatically flushes into the catheter, generating instantaneous positive pressure to prevent blood reflux and reduce catheter blockage.

A positive pressure connector 4 is also provided on the inner side of the inner tube 2. During treatment, the needle body 1 is sometimes required to be inserted into the patient's body to replace the syringe. After the syringe is separated from the needle, the positive pressure needle can generate instantaneous positive pressure in the needle body 1, thereby reducing the risk of the patient's body fluids flowing out of the inner tube 2 through the needle body 1 and causing the transmission of viruses or bacteria that may be contained in the body fluids.

Optionally, as shown in FIG. 1 and FIG. 2, in the first direction X, the size of the outer cylinder 3 is not larger than that of the inner cylinder 3.

The outer tube 3 is larger than the needle body 1.

The size of the outer tube 3 is no larger than that of the inner tube 2, so that the outer tube 3 will not contact the syringe, reducing the risk of wear of the two caused by contact between the outer tube 3 and the syringe; the size of the outer tube 3 is larger than the needle body 1, so that the outer tube 3 can cover the needle and reduce the risk of medical staff being stabbed.

Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (6)

1. A needle, comprising: Needle body; An inner tube and an outer tube, one end of the inner tube is connected to the needle body, the other end of the inner tube is adapted for insertion of the needle, the outer tube is sleeved on the outside of the inner tube, and the outer tube moves relative to the inner tube along a first direction, the first direction being the length direction of the needle body; The inner wall of the outer cylinder is provided with a limiting groove, and the outer wall of the inner cylinder is provided with a positioning piece, and the positioning piece is located in the limiting groove; The positioning member is made of an elastic material, and the positioning member abuts against the bottom wall of the limiting groove. A first positioning hole and a second positioning hole are also provided in the positioning member and the limiting groove. The first positioning hole and the second positioning hole are arranged sequentially along a first direction, and the positioning member can pass through the first positioning hole or the second positioning hole. 2 . The needle according to claim 1 , wherein the outer peripheral surface of the inner tube is in contact with the inner wall of the outer tube. 3. The needle according to claim 1 is characterized in that there are multiple positioning members, and the multiple positioning members are arranged in sequence along the circumference direction of the outer circumferential surface of the inner tube, and the number of the first positioning holes and the second positioning holes are both multiple, and the multiple first positioning holes correspond one-to-one to the multiple positioning members, and the multiple second positioning holes correspond one-to-one to the multiple positioning members. 4. The needle according to claim 3 is characterized in that the limiting groove has two side walls that are opposite to each other and parallel to the first direction, and the two positioning members located at the head and the tail of the plurality of positioning members arranged in sequence are respectively in contact with the two side walls of the limiting groove. 5. The needle according to claim 1, characterized in that a positive pressure connector is also provided inside the inner tube. 6 . The needle according to claim 1 , characterized in that, in the first direction, the size of the outer tube is not larger than that of the inner tube, and the size of the outer tube is larger than that of the needle body.