CN211609806U - Anti-acupuncture safety sheath and anti-acupuncture safety blood taking needle - Google Patents

Abstract

The utility model belongs to the technical field of blood sampling, in particular to a needle-prick prevention safety sheath, a channel is arranged in a sheath body and runs through the sheath body from front to back, a chute is arranged on the side wall of the sheath body, and the chute sequentially comprises an assembly guide section, an initial positioning section, a needle withdrawing section and a locking section from front to back; the assembly guide section and the initial positioning section adopt a staggered design, and a limiting step protruding out of the initial positioning section is arranged on one groove wall of the assembly guide section at the staggered position; the initial positioning section is transited with the needle withdrawing section through the inclined section; a limit structure is arranged between the initial positioning section and the needle withdrawing section; a locking structure is arranged at the joint of the needle withdrawing section and the locking section. The utility model discloses still relate to a prevent acupuncture safety blood taking needle of acupuncture safety sheath with this, need not to change current blood taking needle body structure, also need not to change the puncture custom, the pulling needle handle can move back into and lock into the sheath originally internally with whole needle tubing, fail safe nature is high.

Description

Anti-acupuncture safety sheath and anti-acupuncture safety blood taking needle

Technical Field

The utility model relates to a prevent acupuncture safety sheath and have this prevent acupuncture safety sheath's prevent acupuncture safety blood taking needle belongs to blood sampling technical field.

Background

At present, needle puncture wound is the most common occupational injury of blood sampling nurses, and needle puncture wound of the blood sampling nurses is a main transmission way of occupational exposure infection of hematogenous diseases such as hepatitis B, hepatitis C, AIDS and the like. The main links of needle stick injuries in the blood sampling process are blood sampling operation, needle retraction and contaminated needle treatment, wherein the needle retraction and contaminated needle treatment are the main causes of needle tip puncture.

In addition to the easy occurrence of needle point puncture during blood collection, needle point puncture is also easy to occur during drug injection (such as intramuscular injection by an injector, intravenous infusion by an infusion apparatus, and the like), and blood virus infection is very easy to cause due to the needle point puncture, so that the safety problem of medical staff caused by the needle point puncture is more and more emphasized by society, hospitals and clinical medical staff.

However, the currently developed apparatus for preventing needle-prick injury is generally complex in structure or large in design size, is not suitable for clinical operation, and is not suitable for preventing needle-prick injury in the blood sampling process; most of the devices need to change the structure of the needle body of the conventional blood taking needle, so that the anti-needle-stick injury effect of the devices is reflected, in the practical application process, some devices need to change the operation habits of medical staff and are not convenient for puncturing, therefore, the currently developed anti-needle-stick injury devices are not suitable for preventing needle-point puncture in the blood taking process, even if some patents related to the anti-needle-stick blood taking needle exist, the devices are not clinically applied for the reasons, and the medical staff can accept the devices more easily and are accepted by the market only if the devices which are simple in structure and convenient for blood taking operation are adopted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome not enough among the prior art, provide a simple structure's the safety sheath of preventing acupuncture, provide a safety blood taking needle of preventing acupuncture who has this safety sheath of preventing acupuncture simultaneously, need not to change traditional blood taking needle body structure, also need not to change the puncture habit during the use, can move back and lock whole needle tubing in the safety sheath of preventing acupuncture through the pulling needle handle, fail safe nature is high.

The utility model discloses a prevent acupuncture safety sheath, sheath body adopt medical plastics material to make, be equipped with the passageway in the sheath body along length direction and the passageway runs through the sheath body from front to back, open on the lateral wall of sheath body has a spout that communicates with the passageway, the spout is assembly direction section, initial positioning section, moves back needle section, locking section from front to back in proper order; the assembly guide section and the initial positioning section adopt a staggered design, and a groove wall of the assembly guide section is provided with a limiting step protruding out of the inner surface of the initial positioning section at the staggered position; a limit structure is arranged between the initial positioning section and the needle withdrawing section; a locking structure is arranged at the joint of the needle withdrawing section and the locking section.

The utility model discloses a prevent safe blood taking needle of acupuncture, including needle tubing, needle cannula cover, needle file, hose and above-mentioned prevent the safe sheath of acupuncture, the needle tubing is installed on the needle file, needle file one side has the needle handle, the needle tubing end-to-end connection has the hose, the needle tubing cover suit is outside the needle tubing and its outer end and needle file front end interference fit, the needle file is located the passageway of sheath body, the needle handle is located in the spout and can slide along the spout; when the needle handle is positioned in the initial positioning section, the needle handle is blocked by the limiting step and the inclined section; when the needle handle slides backwards to the locking section, the needle handle is blocked by the locking structure, and the needle tube is completely withdrawn into the anti-acupuncture safety sheath.

The effect of assembly direction section mainly embodies the assembly of preventing acupuncture safety blood taking needle before the product leaves the factory in sheath body spout: during assembly, the needle seat, the needle tube and the needle tube sleeve are assembled with the hose in a bonding mode to form a traditional blood taking needle body, then the hose is placed in the channel of the sheath body, the needle seat is located, the needle handle enters the assembly guide section, the needle handle enters the initial locating section along the wall of the assembly guide section, original locating is achieved, and the state of the anti-needling safety blood taking needle at the moment is defined to be in an initial state. In the initial positioning section, the needle handle cannot move to the assembling guide section side due to the blocking of the limiting step on the assembling guide section, so that the needle seat can be effectively prevented from being separated from the chute of the sheath body, namely, the assembling of the needle body of the blood taking needle and the anti-acupuncture safety sheath can be realized through the assembling guide section, and the needle handle can be limited from the front; meanwhile, on the premise of no external force application, under the action of the inclined section arranged in an inclined manner, the needle handle cannot slide to the needle withdrawing section, namely, the needle handle can be limited from the rear through the inclined section. In conclusion, the needle handle can be positioned in the initial positioning section through the combined action of the assembling guide section and the oblique section, and the quality of the blood taking needle is ensured.

The utility model discloses a use of preventing acupuncture safety blood taking needle is as follows:

before blood collection, taking down a needle tube sleeve on a needle tube, and collecting blood according to the standard blood collection operation; the blood sampling finishes and extracts the back with the blood taking needle body, and handheld sheath body, another hand stimulate the needle handle to sheath body rear, and the needle handle is through the slant section in proper order, moves back the needle section, gets into the locking section at last, and the needle tubing is gone back completely and is locked through locking structure in prevent in the needle prick safety protective sheath (the state of preventing the needle prick safety blood taking needle this moment of definition is safe locking state), need not to overlap the syringe needle again, also need not to handle and pollute the syringe needle to avoided the blood sampling in-process at the needle point puncture of medical staff in the needle is hindered to overlap the syringe needle again, handle and pollute the syringe needle link, fail safe nature is.

Can know in combination with above-mentioned use, the utility model discloses can be directly when using with the supporting use of current blood taking needle body, need not to change the structure of traditional blood taking needle body, need not to change the puncture habit when finishing the blood sampling with the needle tubing back-off to preventing in the acupuncture safety sheath, can lock the needle point into through the pulling needle handle in preventing the acupuncture safety sheath, convenient operation to obtain medical staff's recognition, and then promote on market, and accepted.

Preferably, the locking structure is a locking boss arranged on the inner wall of the sliding groove, the side of the needle withdrawing section of the locking boss is a second guide inclined plane, and the needle handle can slide into the locking section more easily through the guide of the second guide inclined plane. Further preferably, the side of the locking boss close to the locking section is recessed inwards to form a buckle structure, and the needle handle is locked through the buckle structure, so that safety and reliability are ensured.

Preferably, limit structure is a slant section, and there is the contained angle slant section and the initial positioning section of both sides, withdraw of the needle section, and the initial positioning section passes through the transition of slant section and withdraw of the needle section. The inclined angle of the inclined section is not too large, and is generally not more than 60 degrees.

Preferably, the rear end of the sheath body is a handheld end; the structural strength of the hand-held end is higher than that of the locking section in front of the hand-held end, the sliding groove extends towards the hand-held end in rear of the hand-held end and forms an extension section, and the length dimension of the locking section is not more than 1/2 of the width dimension of the root of the needle handle. When the needle handle retreats into the locking section at last, half or more than half of the needle handle retreats into the extension section of the handheld end, and the structural strength (such as wall thickness and the like) of the handheld end is higher than the locking section in front of the handheld end, so that even if a large external force acts on the needle handle, the gap of the locking section cannot be greatly deformed, and the needle handle is effectively prevented from sliding back into the needle retreating section from the locking section. In order to ensure the stability of the operation of the handheld sheath body, an anti-skid bulge is arranged on the outer wall of the handheld end.

Preferably, the front ends of the two wall surfaces of the assembly guide section are provided with assembly inclined planes, the assembly inclined planes incline forwards from back to front, the size of a front end assembly opening of the assembly guide section is enlarged equivalently, and the assembly inclined planes can also play a role in guiding, so that the needle handle can conveniently enter the assembly guide section.

In actual production, the sheath body can be directly formed by integral injection molding, and the material can be polyvinyl chloride (PVC), Polyethylene (PE), polypropylene (PP) and other medical plastics.

Preferably, the height of the limiting step is not less than 1/2 of the thickness of the needle handle, so that the limiting effect on the needle handle is further ensured, and the needle handle is prevented from being separated from the sheath body through a connecting gap between the assembling guide section and the initial positioning section.

Preferably, the distance between the tip of the locking structure and its opposite side groove wall is at least 1/2 less than the thickness of the needle shaft, preventing the needle shaft from moving back into the needle withdrawing section through the gap between the locking structure and its opposite side groove wall.

Compared with the prior art, the utility model beneficial effect who has is:

the utility model discloses simple structure can directly use with current blood taking needle body is supporting during the use, need not to change the structure of traditional blood taking needle body, need not to change the puncture habit when returning back the needle tubing to preventing in the acupuncture safety sheath after the blood sampling finishes, can lock the needle point into through the pulling needle handle in preventing the acupuncture safety sheath, convenient operation to obtain medical staff's approval, and then promote on market, and accepted.

Drawings

FIG. 1 is a schematic view of a configuration of a needle-prick prevention safety shield;

FIG. 2 is a cross-sectional view of the anti-needle-stick safety shield;

FIG. 3 is a schematic view of a needle-prick prevention safety lancet;

FIG. 4 is a schematic view of a needle-prick prevention safety lancet in an initial state;

FIG. 5 is a schematic view of the needle-prick prevention safety lancet in a safety locked state.

In the figure: 1. assembling a guide section; 2. an initial positioning section; 3. an oblique section; 4. withdrawing the needle section; 5. locking the boss; 6. a locking section; 7. a sheath body; 8. a handheld end; 9. anti-skid projections; 10. a limiting step; 11. a first guide slope; 12. assembling an inclined plane; 13. a channel; 14. a chute; 15. a hose; 16. a needle seat; 17. a needle handle; 18. a needle tube; 19. a needle cannula sleeve; 20. an extension section;

5.1, a buckle structure; 5.2 and a second guide inclined surface.

Detailed Description

Embodiments of the present invention are further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, the sheath body 7 of the anti-acupuncture safety sheath is made of medical plastic materials, a channel 13 is arranged in the sheath body 7 along the length direction, the channel 13 penetrates through the sheath body 7 from front to back, a chute communicated with the channel 13 is formed in the side wall of the sheath body 7, and the chute is sequentially provided with an assembling guide section 1, an initial positioning section 2, an inclined section 3, a needle withdrawing section 4 and a locking section 6 from front to back; the assembly guide section 1 and the initial positioning section 2 adopt a staggered design, and at the staggered position, one groove wall of the assembly guide section 1 is provided with a limiting step 10 protruding out of the inner surface of the initial positioning section 2, and the other groove wall is a first guide inclined surface 11 inclined towards one side of the initial positioning section 2; the inclined section 3 and the initial positioning section 2 and the needle withdrawing section 4 on the two sides form included angles, the initial positioning section 2 is transited with the needle withdrawing section 4 through the inclined section 3, the initial positioning section 2 and the needle withdrawing section 4 are staggered through the inclined section 3, and the inclined angle of the inclined section 3 is 30 degrees in the embodiment; a locking structure is arranged at the joint of the needle withdrawing section 4 and the locking section 6.

Wherein:

the locking structure is a locking boss 5 arranged on the inner wall of the sliding chute, the side of the needle withdrawing section 4 of the locking boss 5 is a second guide inclined plane 5.2, and the needle handle 17 can slide into the locking section 6 more easily through the guide of the second guide inclined plane 5.2; the side of the locking boss 5 close to the locking section 6 is inwards concave to form a buckle structure 5.1, and the locking of the needle handle 17 is ensured through the buckle structure 5.1, so that the safety and the reliability are ensured.

The rear end of sheath body 7 is handheld end 8, the spout extends to the handheld end of its rear and forms the extension section, and the length dimension of locking section 6 is not more than 1/2 of needle handle 17 root width dimension, and the position wall thickness dimension that sheath body 7 is located handheld end 8 the place ahead in this embodiment is 1mm, and the wall thickness dimension of handheld end 7 is 2mm, and this size is greater than the wall thickness dimension of locking section 6 position, and consequently, the structural strength of handheld end 8 can be higher than locking section 6 in its place ahead. When the needle handle 17 retreats into the locking section 6 finally, half or more than half of the needle handle 17 retreats into the extension section 20 of the holding end 8, and the structural strength of the holding end 7 is higher than that of the locking section 6, so that even if large external force acts on the needle handle 17, the gap of the locking section 6 cannot be greatly deformed, and the needle handle 17 is effectively prevented from sliding back into the needle withdrawing section 4 from the locking section 6. The outer wall of the handheld end 8 is provided with an antiskid bulge 9, so that the handheld stability is ensured.

The front ends of the two wall surfaces of the assembly guide section 1 are respectively provided with an assembly inclined surface 12, the assembly inclined surfaces 12 incline forwards from back to front, which is equivalent to enlarging the size of the front end assembly opening of the assembly guide section 1, and the assembly inclined surfaces 12 can also play a role in guiding, so that the needle handle 17 can conveniently enter the assembly guide section 1.

In actual production, the sheath body 7 can be directly formed by integral injection molding, and the material can be polyvinyl chloride (PVC), Polyethylene (PE), polypropylene (PP) and other medical plastics.

As shown in fig. 3, the anti-acupuncture safety blood taking needle comprises a needle tube 18, a needle tube sleeve 19, a needle base 16, a hose 15 and the anti-acupuncture safety sheath, wherein the needle tube 18 is installed on the needle base 16, one side of the needle base 16 is provided with a needle handle 17, the tail end of the needle tube 18 is connected with the hose 15, the needle tube sleeve 19 is sleeved outside the needle tube 18, the outer end of the needle tube is in interference fit with the front end of the needle base 16, the needle base 16 is positioned in a channel 13 of the sheath body 7, the needle handle 17 is positioned in the chute 14 and can slide along the chute 14, the thickness of the needle handle 17 is 1mm, the groove widths of an initial positioning section 2, an oblique section 3 and a needle withdrawing section 4 of the chute are 0.9 mm; in the sheath body 7, the height of the limiting step 10 is 0.6mm, and the distance between the top end of the locking boss 5 and the opposite side groove wall is 0.3 mm; when the needle handle 17 is positioned in the initial positioning section 2, the needle handle is blocked by the limiting step 10 and the inclined section 3; when the needle handle 17 slides backwards to the locking section 6, the needle handle is blocked by the locking structure, and the needle tube 18 is completely retracted into the needle-prick prevention safety sheath; in the present embodiment, the first and second electrodes are,

the effect of assembly direction section 1 in 7 spouts of sheath body mainly embodies the assembly of preventing the needle-prick safety blood taking needle before the product leaves the factory: during assembly, an assembly combination of the needle seat 16, the needle tube 18 and the needle tube sleeve 19 is firstly bonded and assembled with the hose 15 to form a traditional blood taking needle body, then the hose 15 is placed in the channel 13 of the sheath body 7, the needle seat 16 is positioned, then the needle handle 17 enters the assembly guide section 1, the needle handle 17 enters the initial positioning section 2 along the first guide inclined plane 11 on the groove wall of the assembly guide section 1 to realize original positioning, and the state of the anti-acupuncture safety blood taking needle at the moment is defined as an initial state, as shown in fig. 4. In the initial positioning section 2, the needle handle 17 cannot move to the assembling guide section 1 side due to the blocking of the limiting step 10 on the assembling guide section 1, so that the needle seat 16 can be effectively prevented from dropping out of the chute 14 of the sheath body 7, namely, the assembling of the needle body of the blood taking needle and the anti-acupuncture safety sheath can be realized through the assembling guide section 1, and the needle handle 17 can be limited from the front; meanwhile, on the premise of no external force application, under the action of the inclined section 3 arranged in an inclined manner, the needle handle 17 cannot slide to the needle withdrawing section 4, namely, the needle handle 17 can be limited from the rear through the inclined section 3. In conclusion, by the combined action of the assembling guide section 1 and the oblique section 3, the needle handle 17 can be positioned in the initial positioning section 2, and the quality of the blood taking needle is ensured.

The utility model discloses a use of preventing acupuncture safety blood taking needle is as follows:

before blood collection, the needle tube sleeve 19 on the needle tube 18 is taken down, and blood collection is carried out according to the blood collection standard operation; the blood sampling finishes, extracts the back with the blood taking needle body, and handheld end 8, the other hand of handheld sheath body 7 stimulate needle handle 17 to sheath body 7 rear, and needle handle 17 is in proper order through slant section 3, withdraw of needle section 4, get into locking section 6 at last, and needle tubing 18 moves back completely and locks through locking boss 5 in prevent pricking safety protection cover (the state of preventing pricking safety blood taking needle this moment of definition is the safe locking state, as shown in figure 5), need not to overlap the syringe needle again, also need not to handle and pollute the syringe needle to avoided the blood sampling in-process in the needle that overlaps again, handle the needle point puncture of medical staff in the needle head link of polluting, fail safe nature is high.

Combine above-mentioned use to know, above-mentioned needle-prick prevention safety sheath can directly use with current blood taking needle body is supporting when using, need not to change current blood taking needle body structure, need not to change the puncture habit when returning needle tubing 18 to needle-prick prevention safety sheath after the blood sampling finishes, can lock the needle point into in the needle-prick prevention safety sheath through pulling needle handle 17, convenient operation to obtain medical staff's recognition, and then promote in market, and accepted.

Claims (10)

1. The utility model provides a prevent acupuncture safety sheath which characterized in that: the sheath body (7) is made of medical plastic materials, a channel (13) is arranged in the sheath body (7) along the length direction, the channel (13) penetrates through the sheath body (7) from front to back, a sliding chute communicated with the channel (13) is formed in the side wall of the sheath body (7), and the sliding chute sequentially comprises an assembling guide section (1), an initial positioning section (2), a needle withdrawing section (4) and a locking section (6) from front to back; the assembly guide section (1) and the initial positioning section (2) adopt a staggered design, and a limiting step (10) protruding out of the inner surface of the initial positioning section (2) is arranged on one groove wall of the assembly guide section (1) at the staggered position; a limit structure is arranged between the initial positioning section (2) and the needle withdrawing section (4); a locking structure is arranged at the joint of the needle withdrawing section (4) and the locking section (6).

2. The needle-prick prevention safety shield according to claim 1, characterized in that: the locking structure is a locking boss (5) arranged on the inner wall of the sliding chute, and a second guide inclined plane (5.2) is arranged on the side of a needle withdrawing section (4) of the locking boss (5).

3. The needle-prick prevention safety shield according to claim 2, wherein: the side of the locking boss (5) close to the locking section (6) is concave inwards to form a buckle structure (5.1).

4. The needle-prick prevention safety sheath according to any one of claims 1 to 3, characterized in that: the limiting structure is an inclined section (3), the inclined section (3) and the initial positioning sections (2) and the needle withdrawing sections (4) on the two sides have included angles, and the initial positioning sections (2) are transited through the inclined section (3) and the needle withdrawing sections (4).

5. The needle-prick prevention safety sheath according to any one of claims 1 to 3, characterized in that: the rear end of the sheath body (7) is a handheld end (8); the structural strength of the handheld end (8) is higher than that of the locking section (6) in front of the handheld end, the sliding groove extends towards the handheld end in the rear direction of the handheld end and forms an extension section (20), and the length dimension of the locking section (6) is not more than 1/2 of the width dimension of the root of the needle handle (17).

6. The needle-prick prevention safety sheath according to any one of claims 1 to 3, characterized in that: the front ends of the two wall surfaces of the assembly guide section (1) are respectively provided with an assembly inclined surface (12), and the assembly inclined surfaces (12) incline forwards from back to front.

7. The needle-prick prevention safety sheath according to any one of claims 1 to 3, characterized in that: the sheath body (7) is integrally formed by injection molding.

8. The utility model provides a prevent acupuncture safety blood taking needle, includes needle tubing (18), needle file (19), needle file (16) and hose (15), and needle tubing (18) are installed on needle file (16), and needle file (16) one side has needle handle (17), and needle tubing (18) end-to-end connection has hose (15), and needle file (19) suit is in needle tubing (18) outside and its outer end and needle file (16) front end interference fit, its characterized in that: the anti-acupuncture safety sheath is additionally provided with any one of claims 1 to 7, a needle seat (16) is positioned in a channel (13) of the sheath body (7), and a needle handle (17) is positioned in the sliding groove (14) and can slide along the sliding groove (14); when the needle handle (17) is positioned in the initial positioning section (2), the needle handle is blocked by the limiting step (10) and the inclined section (3); when the needle handle (17) slides backwards to the locking section (6), the needle handle is blocked by the locking structure, and the needle tube (18) is completely withdrawn into the needle-prick prevention safety sheath.

9. The needle-prick prevention safety lancet according to claim 8, characterized in that: the height of the limiting step (10) is not less than 1/2 of the thickness of the needle handle (17).

10. The needle-prick prevention safety lancet according to claim 8, characterized in that: the distance between the top end of the locking structure and the groove wall at the opposite side is 1/2 less than the thickness of the needle handle (17).

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