CN219422926U

CN219422926U - Blood vessel puncture needle and protection box

Info

Publication number: CN219422926U
Application number: CN202223440613.6U
Authority: CN
Inventors: 朱朝军; 张朝晖; 翟贺争; 刘现周; 孙俊超; 韩重阳
Original assignee: SECOND AFFILIATED HOSPITAL OF TIANJIN UNIVERSITY OF TCM
Current assignee: SECOND AFFILIATED HOSPITAL OF TIANJIN UNIVERSITY OF TCM
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-07-28
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a blood vessel puncture needle and a protection box. The blood vessel puncture needle comprises a needle body, wherein the front end of the needle body forms a needle point, and the rear part of the needle body is connected with a needle handle; the front part of the needle body is bent upwards to form an arc of 5-10 degrees; the outer diameter of the middle part of the needle body is gradually increased and then reduced to form a spindle-shaped expanding part; the tail end of the needle body forms a horn mouth. The protection box comprises a box body, and a groove matched with the shape of the blood vessel puncture needle is formed in the box body. The front part of the needle body forms micro radian, which is more in line with the blood flow dynamics of human body under the condition of not affecting the operation, and is favorable for the blood to flow out along the puncture needle; the spindle-shaped expanding part is formed in the middle of the needle body, the expanding function is added on the basis of the puncturing function of the whole puncture needle, the step of expanding the skin by using a surgical knife during operation is reduced, and the insertion of a vascular sheath is facilitated; the two sides of the needle handle are respectively provided with a thumb holding surface and an index finger holding surface, and the unidirectional holding surface is more in line with the human body holding force and can indicate the direction of the needle tip.

Description

Blood vessel puncture needle and protection box

Technical Field

The utility model relates to the field of medical instruments, in particular to a blood vessel puncture needle and a protection box.

Background

The endovascular treatment is the routine and minimally invasive treatment of coronary heart disease, arteriosclerosis obliterans of lower limbs, deep venous thrombosis of lower limbs, diabetic vascular diseases of lower limbs, carotid artery stenosis and other vascular diseases. Smooth vascular puncture is a precondition for endovascular treatment, and vascular puncture is usually achieved by using a puncture needle. The puncture needle is a metal needle which can puncture skin, smoothly puncture a target blood vessel, further guide a guide wire to smoothly enter a preset position in a blood vessel cavity through the puncture needle, and further establish percutaneous blood vessel access through the guide wire and establish endovascular technical intervention operation in the blood vessel cavity. The most commonly used puncture needle is a single-wall puncture needle which is made of stainless steel, the needle end of the puncture needle is sharp and inclined, and the needle handle part can be provided with base plates with different shapes, so that the puncture needle can be conveniently controlled to advance and retreat. The needle outer diameter of a single-walled lancet is indicated by the "gauge" and the inner diameter of the needle varies depending on the thickness of the needle wall.

The existing single-wall puncture needle has the defects in the clinical application process, such as: the front part of the puncture needle is a straight line, which is not in accordance with the blood flow dynamics of the human body and is not beneficial to the blood flow gushing; the needle point of the puncture needle has no indication or the indication is not obvious, which is not beneficial to distinguishing the direction of the needle point; the bleeding port at the tail end of the puncture needle body is cylindrical, which is not beneficial to blood burst and guide wire insertion; for another example, the same puncture needle has the same outer diameter, has poor skin expanding effect on patients, is unfavorable for the placement of vascular sheaths with larger outer diameters, and needs to expand skin by using a surgical knife. Therefore, in order to solve the defects existing in the use process of the existing puncture needle, a novel blood vessel puncture needle is developed, and a special protection box which is convenient to transport, store and take is matched, so that the clinical practical requirements are met.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a blood vessel puncture needle and a protection box.

In a first aspect, the present application provides a vascular puncture needle, which is realized by adopting the following technical solutions.

A blood vessel puncture needle comprises a needle body, wherein the front end of the needle body forms a needle point, and the rear part of the needle body is connected with a needle handle; the method is characterized in that: the front part of the needle body is bent upwards to form an arc of 5-10 degrees; the outer diameter of the middle part of the needle body is gradually increased and then reduced to form a spindle-shaped expanding part; the tail end of the needle body forms a horn mouth.

Further, the needle body is bent upward to form an arc-shaped part with a length of 1-2cm by taking the middle part of the needle tip as a starting point.

Further, the needle body is bent upward to form an arc-shaped portion of length 1-2cm with the rear end of the needle tip as a starting point.

Further, when the user holds the needle with his right hand, the needle point is inserted into the needle with its tangential plane facing upwards.

Further, the needle body forms an expanded diameter portion with a length of 1-2cm and a diameter of 0.8mm-2mm, starting from 3.5. 3.5cm from the tip of the needle tip.

Further, a depth mark is arranged on the outer wall of the needle body.

Further, the two sides of the needle handle are inwards sunken to form a thumb contact surface and an index finger contact surface which are fit with the shape of the thumb and the index finger of a human body respectively.

Further, an inner cavity is formed in the needle handle, and the inner cavity comprises a connecting cavity, a transition cavity and a main cavity which are sequentially connected; the inner diameter of the transition cavity gradually increases from the connecting cavity to the main cavity; the tail end of the main cavity forms a syringe connecting port; the rear part of the needle body is inserted into the connecting cavity, and the horn mouth is attached to the inner wall of the front end of the transition cavity.

In a second aspect, the present application provides a vascular puncture needle protection box, which is realized by adopting the following technical scheme.

A blood vessel puncture needle protection box comprises a box body, wherein a groove matched with the blood vessel puncture needle in shape is formed in the box body.

The present application has the following advantageous effects.

1. The front part of the needle body is bent upwards to form an arc of 5-10 degrees, so that the needle body better accords with the fluid flow dynamics under the condition of not influencing the operation, is favorable for the blood to rush out along the puncture needle, and ensures that the bleeding is smoother; moreover, when the guide wire is required to be withdrawn after one puncture is unsuccessful, the arc-shaped needle body is more beneficial to the withdrawal of the guide wire, so that the probability that the end of the guide wire is clamped at the needle point is reduced (especially the micro-threading needle and the micro-threading guide wire are frequently clamped on the micro-threading needle when the guide wire is withdrawn);

2. according to the needle, the spindle-shaped diameter-expanding part is formed in the middle of the needle body, the function of expanding the skin is increased on the basis of the puncture function of the whole puncture needle, the application of a surgical knife to expand the skin is reduced, the placement of a vascular sheath is facilitated, the diameter-expanding part is positioned in the middle of the needle body, the outer diameter of the needle body close to the needle handle is smaller than that of the diameter-expanding part, and the bleeding amount is not increased;

3. the needle handle has the advantages that the volume of the needle handle is increased, the needle handle is convenient for a user to hold, the thumb contact surface and the index finger contact surface are respectively arranged on the two sides of the needle handle, when the user holds the needle in the mode, the direction of the puncture needle for inserting the needle and cutting the tip is clarified, and the use comfort of the user holding the needle by the right hand is also improved;

4. the far end of the needle body (in the needle handle) is designed into a horn mouth shape, so that the blood can conveniently flow out and the guide wire can be conveniently placed in;

5. the protection box is arranged for the puncture needle, so that on one hand, the tip of the puncture needle is protected, and the puncture needle is prevented from being polluted by the environment; on the other hand, the safety of the user is improved.

Drawings

FIG. 1 is a schematic view of the structure of the puncture needle of the present utility model;

FIG. 2 is an isometric view of the lancet of the present utility model;

FIG. 3 is a cross-sectional view of the lancet of the present utility model;

FIG. 4 is a schematic view showing the structure of the front part of the needle body according to embodiment 1 of the present utility model;

FIG. 5 is a schematic view showing the structure of the front part of the needle body according to embodiment 2 of the present utility model;

fig. 6 is a schematic view of the structure of the puncture needle and the protection cartridge of the present utility model.

Wherein, 1, the needle point; 2. a needle body; 201. depth identification; 202. an expanded diameter portion; 203. a through hole; 204. a horn mouth; 3. a needle handle; 301. an inner cavity; 3011. a connecting cavity; 3012. a transition chamber; 3013. a main chamber; 302. a syringe connection port; 303. a thumb contact surface; 304. an index finger contact surface; 4. a protection box; 401. a case body; 402. an upper cover; 403. an upper groove; 404. a lower groove; 405. a locking pin; 406. a clamping groove.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

As shown in fig. 1-6, a vascular puncture needle comprises a needle body 2 and a needle handle 3.

The length of the needle body 2 is 7-cm-10 cm, and a through hole 203 is formed in the needle body 2; the front end of the needle body 2 forms a needle point 1, and an oblique needle inlet section is formed on the needle point 1.

The application improves the front part of the needle body 2, and enables the front part of the needle body 2 to be bent upwards to form an arc of 5-10 degrees, and according to the difference of bending parts, the application designs the following two types of needle bodies:

example 1

As shown in fig. 4, the needle body 2 is bent upward to form an arc-shaped portion of length 1-2cm, preferably 1 cm, with the rear end of the needle tip 1 as a starting point.

Example 2

As shown in FIG. 5, the needle body 2 is bent upward to form an arc-shaped portion of length 1-2cm, preferably 1 cm, starting from the middle of the needle tip 1.

The improved puncture needle tip 1 forms a slight radian, and is more in line with the fluid flow dynamics under the condition of not affecting the operation, thereby being beneficial to the blood to rush out along the puncture needle. In addition, when the puncture guide wire cannot move along the blood vessel or the puncture is not in place at one time and the guide wire needs to be withdrawn, the linear type puncture needle in the prior art is not beneficial to withdrawal of the guide wire, if the used guide wire head end is softer, the guide wire is easier to clamp on the needle point, the withdrawal difficulty of the guide wire is further increased, and the puncture needle with the arc-shaped front part can facilitate withdrawal of the guide wire from the puncture needle.

The needle body 2 is gradually increased in outer diameter and then reduced to form a spindle-shaped diameter-expanding part 202 by taking a position 3.5cm away from the tip end of the needle tip 1 as a starting point, the length of the diameter-expanding part 202 is 1-2cm, and the diameter is 0.8mm-2mm. The diameter-enlarging portion 202 is located in the middle of the needle body 2, and the outer diameters of the needle bodies on both sides of the diameter-enlarging portion 202 are the same. The expanding portion 202 can increase the skin expanding effect when the puncture needle punctures, and the whole needle body 2 has a large outer diameter in the middle and small outer diameters at the two sides, so that the bleeding amount can not be increased due to the expanding.

The outer wall of the needle body 2 is provided with a plurality of depth marks 201 for indicating the penetration depth of the puncture needle. Specifically, there are 1 depth marks 201 on the outer wall of the needle body 2 at 1/cm intervals.

The tail end of the needle body 2 is provided with a horn mouth 204 which plays a role in transition and guide of blood gushing and guide wire placement.

The rear part of the needle body 2 is connected with a needle handle 3. Specifically, an inner cavity 301 is formed in the needle handle 3, the inner cavity 301 comprises a connecting cavity 3011 for inserting the tail of the needle body 2, and the connecting cavity 3011 is communicated with the transition cavity 3012; the transition cavity 3012 is in a truncated cone shape, the inner diameter of one side close to the connection cavity 3011 is smaller than the inner diameter of one side far away from the connection cavity 3011, and a horn mouth 204 at the tail end of the needle body 2 is attached to the inner wall of the front end of the transition cavity 3012; the transition chamber 3012 communicates with the main chamber 3013, and the distal end of the main chamber 3013 forms a syringe connection port 302. In addition, the syringe connection port 302 can be connected with a negative pressure suction syringe, so that the problem that after a puncture needle enters a blood vessel, blood flow gushes out is not obvious for a patient with partial vascular stenosis or slow blood flow is solved.

Compared with the volume of the existing puncture needle handle, the puncture needle handle has the advantages that the volume is increased, the whole puncture needle handle is cuboid, the size is 2cm long and 0.8-1.2 cm wide, and the height is 0.8-1.2 cm, so that the puncture needle handle is more convenient for a user to hold. Moreover, the two sides of the needle handle 3 are inwards recessed to form a thumb contact surface 303 and an index finger contact surface 304 which are fit with the shape of a thumb and an index finger of a human body respectively, the area of the thumb contact surface 303 is larger than that of the index finger contact surface 304, and a user usually takes a needle from the upper side by a right hand, and after an arc surface is formed at one end of the thumb contact surface 303 close to the needle body 2, a plane is formed (as shown in fig. 1); the middle part of the contact surface 304 of the index finger forms a gentle cambered surface, and the edge of the cambered surface is obliquely arranged (as shown in fig. 2), so that the contact surface more accords with the structure of the finger and the human body mechanics and is convenient for force application.

The current indication mode of the needle tip direction of the puncture needle is to mark an arrow mark on the needle handle of the puncture needle, but the mark is only on the needle handle, which is not beneficial to observation. When the user holds the needle with the right hand, the needle feeding section is upward, the needle feeding section of the puncture needle is marked by adopting the mode, and the direction of the needle feeding section can be clarified only by holding the needle according to the mode, so that the use convenience is improved.

The present application also contemplates a protective case 4 for the lancet. The protection case 4 includes a case body 401 and an upper cover 402. The box body 401 and the upper cover 402 respectively form a lower groove 404 and an upper groove 403, the shapes of the upper groove 403 and the lower groove 404 are matched with that of the puncture needle, and the upper groove 403 and the lower groove 404 together form a puncture needle placing groove. The clamping structure between the box body 401 and the upper cover 402 comprises a locking pin 405 arranged on the upper cover 402 and a clamping groove 406 arranged on the box body 401, wherein the locking pin 405 is clamped into the clamping groove 406 through deformation, so that the protection box 4 is prevented from being opened easily.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A blood vessel puncture needle comprises a needle body (2), wherein the front end of the needle body (2) forms a needle point (1), and the rear part of the needle body (2) is connected with a needle handle (3); the method is characterized in that: the front part of the needle body (2) is bent upwards to form an arc of 5-10 degrees; the outer diameter of the middle part of the needle body (2) is gradually increased and then reduced to form a spindle-shaped expanded diameter part (202); the tail end of the needle body (2) forms a horn mouth (204).

2. A vascular puncture needle according to claim 1, wherein: the middle part of the needle tip (1) is used as a starting point, and the needle body (2) is upwards bent to form an arc-shaped part with the length of 1 cm to 2 cm.

3. A vascular puncture needle according to claim 1, wherein: the rear end of the needle tip (1) is used as a starting point, and the needle body (2) is upwards bent to form an arc-shaped part with the length of 1 cm to 2 cm.

4. A vascular puncture needle according to claim 1, wherein: when the user holds the needle with the right hand, the needle inlet section of the needle point (1) faces upwards.

5. A vascular puncture needle according to claim 1, wherein: the needle body (2) forms an expanded diameter part (202) by taking the position 3.5cm away from the tip of the needle tip (1) as a starting point, the length of the expanded diameter part (202) is 1-2cm, and the diameter is 0.8-2 mm.

6. A vascular puncture needle according to claim 1, wherein: the outer wall of the needle body (2) is provided with a depth mark (201).

7. A vascular puncture needle according to claim 1, wherein: the two sides of the needle handle (3) are inwards sunken to form a thumb contact surface (303) and an index finger contact surface (304) which are fit with the shape of the thumb and the index finger of a human body respectively.

8. A vascular puncture needle according to claim 1, wherein: an inner cavity (301) is formed in the needle handle (3), and the inner cavity (301) comprises a connecting cavity (3011), a transition cavity (3012) and a main cavity (3013) which are connected in sequence; the inner diameter of the transition cavity (3012) gradually increases from the connecting cavity (3011) to the main cavity (3013); the end of the main cavity (3013) forms a syringe connection port (302); the rear part of the needle body (2) is inserted into the connecting cavity (3011), and the horn mouth (204) is attached to the inner wall of the front end of the transition cavity (3012).

9. A blood vessel puncture needle protection box, its characterized in that: comprising a box body (401), wherein a groove matched with the shape of the blood vessel puncture needle according to any one of claims 1 to 8 is formed in the box body (401).