CN205286492U - Blood -letting puncture bloodletting needle - Google Patents

Abstract

The utility model discloses a bloodletting needle for pricking and bloodletting, which comprises: a needle head, a needle cylinder, a push rod and an outer cylinder; the needle cylinder is a cylindrical structure with two ends open; And one end of the push rod has a columnar structure that matches the inner diameter of the syringe; the push rod can slide in the syringe; the needle is fixed vertically on the columnar structure, and is opposite to the direction of the other end of the push rod; One end is screwed to one end of the outer cylinder, and the other end of the outer cylinder has a protrusion with an inner diameter smaller than the inner diameter of the outer cylinder; an elastic block is provided on the side of the columnar structure, and a positioning hole is provided at the corresponding position of the syringe. The phlebotomy needle realizes the movement and positioning of the needle head through the elastic block and the positioning hole, and the length of the needle head can be adjusted through the outer cylinder threadedly connected with the needle cylinder. In this way, not only the use of the needle is safe and reliable, but also the length of the needle can be relatively adjusted, so that medical operators can safely and reliably perform puncture and bloodletting operations.

Description

a bloodletting needle

technical field

The utility model relates to the technical field of medical equipment, in particular to a bloodletting needle for pricking and bloodletting.

Background technique

Pricking and bloodletting is one of the common treatments of acupuncture and moxibustion. It is simple and easy to operate, and is widely used in internal and external women and children, as well as diseases of facial features and skin. At present, in the field of diagnosis and treatment of traditional Chinese medicine, three-edged needles, plum-blossom needles, filiform needles or knives are often used clinically to puncture acupoints on body parts, reaction points of lesions, or superficial veins. But most of the bloodletting needles used clinically at present are provided with a plastic protective cover on the surface of the bloodletting needle body. During use, the plastic sleeve needs to be removed before puncturing. On the one hand, returning the device to the sleeve after puncturing is prone to needle-stick injuries; on the other hand, the plastic sleeve is simply set on the pricking bloodletting needle, which is easy to slip off, causing puncture injuries and causing disease infection. Most of the pricking pens on the market that can be used repeatedly are made of stainless steel and other materials, which feel heavy when held, and the structure of the pen body is difficult to achieve a good disinfection effect, and the needle needs to be replaced every time it is used, which increases the occurrence of needle stick injuries risks of. In addition, from the perspective of professional technology, firstly, pricking and pricking are commonly used in bloodletting, and the appropriate inner diameter and length of the syringe can facilitate the operator to hold the puncture so as to reduce the pain during puncture; secondly, fine collaterals, green veins, The arterial puncture depth is different, so the length of the puncture needle needs to be adjusted appropriately to adapt to different puncture depths; moreover, according to the selection of blood pricking sites and acupoints, the ear points and earlobe are mostly used for auricular points, and elastic structure puncture pens similar to blood sugar puncture needles are used It is impossible to operate, and ordinary bloodletting needles are also inconvenient. Therefore, from the aspects of prevention of needlestick injury, infection control and improvement of puncture skills, the existing bloodletting equipment cannot meet the simultaneous use of body and auricular points in clinical use.

Utility model content

In view of this, the purpose of this utility model is to provide a bloodletting needle for pricking and bloodletting, so that medical personnel can safely and reliably perform puncture and bloodletting operations.

Based on the above-mentioned purpose, the bloodletting needle provided by the utility model includes: a needle head, a syringe, a push rod and an outer cylinder; the syringe is a cylindrical structure with two ends open; Inside, the other end protrudes along the syringe, and one end of the push rod has a columnar structure adapted to the inner diameter of the syringe; the push rod can slide in the syringe; the needle is vertical It is fixed on the columnar structure, and is opposite to the setting direction of the other end of the push rod; the syringe is threadedly connected to one end of the outer cylinder along one end of the needle, and the other end of the outer cylinder It has a protrusion with an inner diameter smaller than the inner diameter of the outer cylinder; an elastic block is provided on the side of the columnar structure, and a positioning hole is provided at a position corresponding to the elastic block in the syringe.

Preferably, two sets of elastic clamping blocks are arranged symmetrically on the sides of the columnar structure.

Further, multiple sets of positioning holes are uniformly arranged on the syringe along the sliding direction of the elastic block.

Preferably, the phlebotomy needle further includes a spring; the spring is arranged in the syringe, and the syringe is provided with a stopper along the inside of one end of the needle; one end of the spring is connected to the The columnar structure of the push rod is connected, and the other end is connected with the stopper.

Preferably, the phlebotomy needle further includes a cap, and the cap is threadedly connected with the protrusion for closing one end of the outer cylinder.

Further, the needle is threadedly connected with the columnar structure.

Preferably, the outer circumference of the syringe has a non-slip structure.

Further, the anti-slip structure is a thread-like protrusion or a dot-like protrusion.

It can be seen from the above that the needle for pricking and bloodletting provided by the utility model places the needle in the syringe, on the one hand, realizes the movement and positioning of the needle through the elastic block and the positioning hole; The outer barrel to which the barrel is threaded enables adjustment of the length by which the needle protrudes. In this way, not only the use of the needle is safe and reliable, but also the length of the needle can be relatively adjusted, so that medical operators can safely and reliably perform puncture and bloodletting operations.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the pricking and bloodletting needle provided by the utility model;

Fig. 2 is a partial schematic diagram of the connection between the needle head and the push rod of the pricking bloodletting needle provided by the utility model.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

Referring to FIG. 1 , it is a schematic structural view of an embodiment of the pricking and bloodletting needle provided by the present invention. The shown pricking and bloodletting needle includes: a needle head 1 , a needle cylinder 2 , a push rod 3 and an outer cylinder 4 . The syringe 2 is a cylindrical structure with openings at both ends; one end of the push rod 3 is inside the syringe 2, and the other end protrudes along the syringe 2, and one end of the push rod 3 has a The cylindrical structure 31 with the inner diameter of the syringe 2 adapted; the push rod 3 can slide in the syringe 2; the other end of the push rod 3 is located outside the syringe 2 to facilitate operation Push and pull of personnel. The needle head 1 is vertically fixed on the columnar structure 31 , and is opposite to the setting direction of the other end of the push rod 3 , that is, the push rod 3 is pushed so that the columnar structure 31 is inside the syringe 2 sliding, thereby making the needle 1 extend or retract. The syringe 2 is threadedly connected to one end of the outer cylinder 4 along one end of the needle 1, and the other end of the outer cylinder 4 has a protrusion with an inner diameter smaller than the inner diameter of the outer cylinder 4, so that the needle 1 , the syringe 2, the push rod 3 and the outer cylinder 4 form a structure similar to a syringe as a whole. The side of the columnar structure 31 is provided with an elastic block 32, and the position of the syringe 2 corresponding to the elastic block 32 is provided with a positioning hole 22, and the elastic block 32 cooperates with the positioning hole 22, The positioning of the columnar structure 31 can be realized, that is, the positioning of the needle 1 can be realized.

By pushing the push rod 3, the needle head 1 can gradually protrude from the syringe 2 and the outer cylinder 4. When the elastic block 32 coincides with the position of the positioning hole 22, the The elastic block 32 protrudes from the positioning hole 22 to fix the position of the needle 1 . Then, by turning the outer cylinder, the length of the needle 1 outside can be relatively adjusted, and finally, the puncture operation of the needle 1 can be realized by holding the needle barrel 2 .

It can be known from the above-mentioned embodiments that by setting the needle 1 in the syringe 2, the phlebotomy needle can not only protect the needle 1 before and after use, but also prevent the needle 1 from being stabbed. Medical personnel or patients, and by setting the appropriate size of the syringe 2, it is easier for the medical personnel who use the lancet to hold and apply pressure, that is, the performance of the lancet is greatly improved. Piercing efficiency and quality. At the same time, by adapting the columnar structure 31 at one end of the push rod 3 to the size of the needle barrel 2, it can be ensured that the needle 1 will not swing in a direction perpendicular to the needle 1, which improves the thrust of the needle. The safety of network phlebotomy needles. By arranging an outer cylinder 4 threadedly connected with the syringe 2 at the front end of the syringe 2, the medical staff can adjust the extension length of the needle, that is, it can adapt to different puncture requirements, which is very convenient. The practicability of the described pricking bloodletting needle is greatly improved. After use, the locking state can be released by pressing the elastic locking block 32 , that is, the needle 1 can be retracted into the syringe 2 .

Further, the size of the syringe 2 matches the size of the three fingers of the human body, for example, the outer diameter of common pencils, ballpoint pens, pens, etc. In this way, it can be more in line with the laws of human body, so that the medical staff who perform the puncture operation are more convenient and convenient.

In some preferred embodiments, two groups of elastic blocks 32 are symmetrically arranged on the sides of the columnar structure 31 . In this way, on the one hand, the symmetrical elastic block 32 makes the force on the columnar structure 31 more uniform, which improves the safety and stability of the lancet. On the other hand, by setting two sets of elastic blocks 32, when the needle needs to be withdrawn, the medical personnel need to press the two sets of elastic blocks 32 at the same time, which can avoid the retraction of the needle 1 caused by accidental touch or misoperation, which will affect the Describe the normal use of pricking and bloodletting needles.

Further, the syringe 2 is uniformly provided with multiple sets of positioning holes 22 along the sliding direction of the elastic block 32 . In this way, multiple engaging positions can be set according to the needs of use, that is, the needle 1 has multiple sets of protruding lengths, which can improve the range of use of the phlebotomy needle.

In a preferred embodiment of the present invention, the inner diameter of the protrusion 41 is slightly larger than the diameter of the needle 1 . In this way, the swing of the needle head 1 can be further restricted, so as to ensure the stability of the puncturing needle during puncturing.

In some preferred embodiments, the phlebotomy needle further includes a spring 5; the spring 5 is arranged in the syringe 2, and the syringe 2 is arranged inside one end of the needle 1 Stopper 21; one end of the spring 5 is connected to the columnar structure 31 of the push rod 3, and the other end is connected to the stopper 21 for providing a mechanism for making the push rod 3 retreat toward the syringe 2 force. The spring 5 can be fixedly connected with the push rod 3 and the stop block 21, or not connected, as long as the two ends of the spring 5 are in contact with the push rod 3 and the stop block 21 respectively . After the use of the phlebotomy needle is completed, the engagement state between the columnar structure 31 and the syringe 2 is released by pressing the elastic block 32, and the spring 5 in the compressed state will push the pusher. The rod 3 further makes the needle 1 retreat into the syringe 2, preventing other hazards that may be caused by the used needle 1. In this way, the medical staff can retract the needle 1 into the syringe 2 without touching the needle 1, which greatly improves the safety of the phlebotomy needle.

Further, the phlebotomy needle further includes a cap 6 which is threadedly connected with the protrusion 41 for closing one end of the outer cylinder 4 . Because, the needle may cause the needle 1 to protrude forward from the syringe 2 due to external force, and by setting the cap 6 at the exit position of the needle 1, it can ensure that the needle 1 Absolute safety, that is, the safety reliability of the described lancet for bloodletting is improved.

In some preferred embodiments, the outer periphery of the syringe 2 has a non-slip structure (not shown in the figure). In this way, the stability and safety in use of the phlebotomy needle can be further improved. The anti-slip structure can be thread-like protrusions, point-like protrusions, and a layer of anti-slip material can also be covered on the outer circumference of the syringe 2 .

In some optional embodiments, the syringe 2 is made of lightweight materials such as plastic. Like this, be conducive to the bloodletting operation of medical personnel.

Referring to FIG. 2 , it is a partial schematic diagram of the connection between the needle head and the push rod of the pricking bloodletting needle provided by the present invention. The needle 1 is threadedly connected to the columnar structure 31 . The cylindrical structure 31 has a threaded hole 311 with an internal thread, and the needle 1 has a tip 11 with an external thread. By arranging the needle 1 and the columnar structure 31 to be threadedly connected, not only the needle 1 can be replaced and the rest of the components can be reused, but also the end of the needle 1 can be screwed into the threaded hole 311. Length, relative to adjust the length of the needle 1.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the scope of the present disclosure (including claims) is limited to these examples; under the idea of the present utility model, the above embodiments Or combinations of technical features in different embodiments are also possible, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, within the spirit and principle of the present utility model, any omission, modification, equivalent replacement, improvement, etc. should be included in the protection scope of the present utility model.

Claims (8)

1. A needle for pricking and bloodletting, characterized in that it comprises: a needle, a syringe, a push rod and an outer cylinder; the syringe is a cylindrical structure with openings at both ends; one end of the push rod is in the syringe Inside, the other end protrudes along the syringe, and one end of the push rod has a columnar structure adapted to the inner diameter of the syringe; the push rod can slide in the syringe; the needle is vertical It is fixed on the columnar structure, and is opposite to the setting direction of the other end of the push rod; the syringe is threadedly connected to one end of the outer cylinder along one end of the needle, and the other end of the outer cylinder It has a protrusion with an inner diameter smaller than the inner diameter of the outer cylinder; an elastic block is provided on the side of the columnar structure, and a positioning hole is provided at a position corresponding to the elastic block in the syringe. 2 . The bloodletting needle according to claim 1 , wherein two groups of elastic blocks are symmetrically arranged on the side of the columnar structure. 3 . 3 . The bloodletting needle according to claim 1 , wherein the syringe is uniformly provided with a plurality of sets of positioning holes along the sliding direction of the elastic block. 4 . 4. The puncture and bloodletting needle according to claim 1, further comprising a spring; the spring is arranged in the syringe, and the syringe is provided with a stopper along the inside of one end of the needle ; One end of the spring is connected to the columnar structure of the push rod, and the other end is connected to the stopper. 5 . The puncture and bloodletting needle according to claim 1 , further comprising a cap, the cap is threadedly connected with the protrusion, and is used for closing one end of the outer cylinder. 6 . 6. The puncture and bloodletting needle according to any one of claims 1-5, characterized in that, the needle is threadedly connected to the columnar structure. 7. The phlebotomy needle according to any one of claims 1-5, characterized in that the outer periphery of the syringe has a non-slip structure. 8 . The bloodletting needle according to claim 7 , wherein the anti-slip structure is a thread-like protrusion or a point-like protrusion.