CN216570135U - A femoral vein puncture device - Google Patents

Abstract

The utility model discloses a femoral vein puncture device, which comprises a needle cylinder and a puncture needle; the needle cylinder comprises a needle cylinder cavity, a sliding groove and a plurality of clamping grooves, the needle cylinder cavity is arranged in the needle cylinder, the needle cylinder cavity is communicated with the head of the needle cylinder and the tail of the needle cylinder, the needle cylinder cavity is used for accommodating a puncture needle, the sliding groove is arranged on the outer wall of the needle cylinder and communicated with the needle cylinder cavity, one end of the sliding groove is also communicated with the needle cylinder cavity positioned on the tail of the needle cylinder, the clamping grooves are arranged on the outer wall of the needle cylinder and communicated with the needle cylinder cavity, the clamping grooves are also communicated with the sliding groove, and the plurality of clamping grooves are sequentially arranged on the tail of the needle cylinder in the direction towards the head of the needle cylinder; the puncture needle is provided with a handle, the handle is used for moving along the sliding groove, and the handle is also used for being clamped in the clamping groove. The femoral vein puncture device has the function of assisting positioning of a user, and the success rate of puncture of beginners is improved.

Description

A femoral vein puncture device

technical field

The utility model relates to the technical field of medical instruments, in particular to a femoral vein puncture device.

Background technique

The femoral vein is the main vein of the lower extremity, and its upper segment is located in the femoral triangle. The upper boundary is the inguinal ligament, the lateral boundary is the medial border of the sartorius muscle, the medial border is the medial border of the adductor longus muscle, the anterior wall is the fascia lata, and the posterior wall is composed of the iliopsoas muscle, the pubic muscle and its fascia. The blood vessels and nerves in the femoral triangle are arranged in the middle of the femoral artery, the femoral nerve on the outside, and the femoral vein on the inside.

At present, femoral vein puncture and catheterization are mostly used for the difficulty of puncturing the peripheral superficial vein. When looking for the femoral vein, the pulsating femoral artery should be used as the symbol. 2 to 3 cm below the midpoint, 0.5 cm medial to the femoral artery pulse, and reach the femoral vein through the skin, superficial fascia, fascia lata, and femoral sheath. The clinically commonly used puncture devices are simple in design and cannot accurately estimate the puncture depth and puncture site. Beginners often puncture or injure blood vessels.

Utility model content

Therefore, it is necessary to provide a femoral vein puncture device to improve the probability of successful puncture for beginners.

To achieve the above purpose, the present embodiment provides a femoral vein puncture device, including a needle barrel and a puncture needle;

The syringe includes a syringe cavity, a sliding groove and a plurality of clamping grooves, the syringe cavity is arranged in the syringe, and the syringe cavity communicates with the head of the syringe and the end of the syringe. At the tail, the barrel cavity is used for accommodating the puncture needle, the sliding groove is arranged on the outer wall of the barrel and communicates with the barrel cavity, and one end of the sliding groove is also connected to the barrel located in the barrel. The needle cylinder cavity on the tail of the cylinder, the clamping groove is arranged on the outer wall of the needle cylinder and communicates with the needle cylinder cavity, the clamping groove is also connected with the sliding groove, and a plurality of the clamping grooves are in the The tail of the needle cylinder is arranged in sequence in the direction toward the head of the needle cylinder;

A handle is provided on the puncture needle, the handle is used for moving along the sliding groove, and the handle is also used for being clamped into the clamping groove.

Further, a scale is provided on the outer wall of the syringe, and the zero-scale line of the scale is flush with the tail of the syringe.

Further, the range of the scale is more than 5 cm.

Further, the puncture needle includes a puncture needle cavity, the puncture needle cavity is arranged in the puncture needle, the puncture needle cavity is connected with the head of the puncture needle and the tail of the puncture needle, the puncture needle The lumen is used to accommodate the guide wire.

Further, the puncture needle further includes a hole, and the hole is arranged on the outer wall of the puncture needle and communicates with the puncture needle cavity.

Further, the puncturing device further includes a guide wire, and the shape of the guide wire is J-shaped.

Further, the puncturing device further comprises a baffle plate and a spring, the baffle plate is arranged in the barrel cavity, the baffle plate is located between the sliding groove and the head of the needle barrel, and the spring Provided on the baffle, the spring is used to cover the outer wall of the puncture needle.

Further, the puncture needle includes an upper tube and a lower tube, the width of the upper tube is greater than the width of the lower tube, and the head of the puncture needle is located on the side of the upper tube away from the lower tube, A limit block is provided at the connection between the upper tube and the lower tube, and the limit block is used to connect with the spring.

Further, the limit block is a rubber limit block.

Further, the syringe further includes a dilator, the dilator is funnel-shaped, and the dilator is located at the head of the syringe.

Different from the prior art, in the above technical solution, the user puts the puncture needle into the syringe; one of the user holds the syringe, the other holds the handle of the puncture needle and pushes it down slowly, so that the head of the puncture needle is removed from the needle. The syringe cavity located at the head of the syringe extends out and penetrates the skin; continue to push down slowly, and after reaching the preset depth, the handle can be deflected to be clamped into the slot, thereby realizing the fixation of the puncture needle; wherein, By presetting the position of the slot, the fixed depth of the puncture needle can be controlled; in this way, the femoral vein puncture device provides the function of assisted positioning for the user, which improves the success rate of puncture for beginners, and the depth of the needle is controlled, which can effectively avoid the occurrence of A condition in which a blood vessel is perforated.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of the syringe in this embodiment;

FIG. 2 is a schematic cross-sectional structure diagram of the puncture needle in this embodiment.

Description of reference numbers:

1. Syringe;

11. Syringe cavity; 12. Sliding slot; 13. Card slot; 14. Dilator; 15. Scale;

2. Puncture needle;

21, puncture needle cavity; 22, handle; 23, hole; 24, upper tube; 25, lower tube;

3. Spring;

4. Baffle;

5. Limit block.

Detailed ways

In order to describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following detailed description is given in conjunction with specific embodiments and accompanying drawings.

Referring to FIG. 1 to FIG. 2 , this embodiment provides a femoral vein puncture device, including a syringe 1 and a puncture needle 2 . The syringe 1 includes a syringe cavity 11 , a sliding groove 12 and a plurality of clamping grooves 13 , the syringe cavity 11 is arranged in the syringe 1 , and the syringe cavity 11 communicates with the The head and the tail of the syringe 1. The syringe cavity 11 is used for accommodating the puncture needle 2 , the syringe cavity 11 located on the head of the syringe 1 is used as a passage for the puncture needle 2 to pass through, and the syringe cavity 11 located on the tail of the syringe 1 . The barrel cavity 11 is used as a channel for the entry of the puncture needle 2 . The sliding groove 12 is arranged on the outer wall of the syringe 1 and communicates with the syringe cavity 11 , and one end of the sliding groove 12 is also connected to the syringe cavity 11 located on the tail of the syringe 1 , When the puncture needle 2 enters the barrel cavity 11 , the handle 22 is located in the sliding groove 12 and can slide up and down. The card slot 13 is arranged on the outer wall of the needle cylinder 1 and communicates with the needle cylinder cavity 11 , the card slot 13 is also connected to the sliding slot 12 , and the card slot 13 is used for the handle 22 to be locked. catch. A plurality of the latching grooves 13 are sequentially arranged in the direction from the tail of the syringe 1 toward the head of the syringe 1 . A handle 22 is provided on the puncture needle 2 , the handle 22 is used for moving along the sliding groove 12 , and the handle 22 is also used for being clamped into the clamping groove 13 .

In the above technical solution, the user puts the puncture needle into the syringe; one hand of the user holds the syringe, and the other holds the handle of the puncture needle and pushes it down slowly, so that the head of the puncture needle moves away from the head of the syringe. The needle cylinder cavity of the puncture needle sticks out and pierces the skin; continue to push down slowly, after reaching the preset depth, the handle can be deflected to be snapped into the clip slot, thereby realizing the fixation of the puncture needle; wherein, the clip slot is preset. Position, the fixed depth of the puncture needle can be controlled; in this way, the femoral vein puncture device provides the function of assisted positioning for the user, which improves the success rate of puncture for beginners, and the depth of needle insertion is controlled, which can effectively avoid the situation of blood vessels being perforated. .

Referring to FIG. 1 , in this embodiment, in order to measure the descending depth of the puncture needle 2 , a scale 15 is provided on the outer wall of the syringe 1 , and the zero scale line of the scale 15 is flush with the tail of the syringe 1 . . The scale 15 is used to measure the descending depth of the puncture needle 2, and the puncture needle 2 enters from the tail of the needle barrel 1, so the handle 22 is flush with the zero scale line before the measurement, and the needle head of the puncture needle 2 is best at this time. Just about to expose the head of syringe 1. Preferably, the syringe 1 is a transparent syringe, and the material may be plastic or glass, so that the user can see the puncture needle 2 inside from the outside.

In this embodiment, the range of the scale 15 is more than 5 cm, and the range of the scale 15 may be 5 cm, 6 cm, 7 cm, 8 cm, etc., depending on the actual situation. For example, 1 on the scale of the scale 15 in FIG. 1 represents a 1-centimeter scale line, and 6 represents a 6-centimeter scale line. The division value of the scale 15 is 1 mm, which is convenient for naked eye observation and accurate adjustment.

Referring to FIG. 2 , in this embodiment, the femoral vein puncture device is suitable for the guide wire puncture method, the puncture needle 2 includes a puncture needle cavity 21 , and the puncture needle cavity 21 is arranged in the puncture needle 2 , so The puncture needle cavity 21 communicates with the head of the puncture needle 2 and the tail of the puncture needle 2, and the puncture needle cavity 21 is used for accommodating a guide wire. The guide wire enters the puncture needle cavity 21 from the tail of the puncture needle 2 , and the guide wire protrudes from the head of the puncture needle cavity 21 . The guide wire may be a straight guide wire, that is, the guide wire is straight; the guide wire may also be a J-shaped guide wire, that is, the shape of the guide wire is J-shaped.

Referring to FIG. 2 , in this embodiment, in order to prevent blood from spilling into the surgical field after successful puncture, the puncture needle 2 further includes a hole 23 , and the hole 23 is arranged on the outer wall of the puncture needle 2 and is connected with the puncture needle 2 . The puncture needle cavity 21 communicates with each other. It should be noted that the hole 23 is provided on the upper part of the puncture needle 2 . In this way, the blood overflowing through the puncture needle cavity 21 will flow out from the hole 23, so that the blood cannot continue to overflow to the surgical field, providing a better surgical environment for the user.

Referring to FIG. 1 , in this embodiment, in order to adjust the descending depth of the puncture needle 2 , the puncture device further includes a baffle 4 and a spring 3 . The baffle 4 is arranged in the needle cylinder cavity 11 , and the baffle 4 is located between the sliding groove 12 and the head of the needle cylinder 1 . It should be noted that a notch is provided in the middle of the baffle 4 for the puncture needle 2 to pass through. The spring 3 is arranged on the baffle 4 , and the spring 3 is used to cover the outer wall of the puncture needle 2 . The spring 3 is parallel to the height of the needle cylinder 1 , and the height of the needle cylinder 1 is the distance from the head of the needle cylinder 1 to the tail of the needle cylinder 1 . Preferably, the spring 3 is a memory spring, and the memory spring is made of a memory alloy wire wound by using the memory effect of the memory alloy. It should be noted that the spring 3 is a helical spring, one end of the spring 3 is fixed on the baffle 4, the puncture needle 2 is sleeved on the other end of the spring 3 when it descends, and then the spring 3 is compressed downward to prevent the puncture needle 2 from descending too much. Fast and stabs blood vessels. It should be noted that the handle 22 is placed in the card slot 13 , and the elastic force of the spring 3 will not cause the handle 22 to leave the card slot 13 .

Referring to FIG. 2, in this embodiment, in order to make the structure of the puncture needle 2 fit with the spring 3, the puncture needle 2 includes an upper tube 24 and a lower tube 25, and the width of the upper tube 24 is larger than that of the lower tube 25. The width of the tube 25, the head of the puncture needle 2 is located on the side of the upper tube 24 away from the lower tube 25. It should be noted that, because the puncture needle 2 has a puncture needle cavity 21 , the middle parts of the upper tube 24 and the lower tube 25 communicate with each other to form the puncture needle cavity 21 . The lower tube 25 can be a steel needle, which is relatively thin and mainly plays the role of puncturing. The upper tube 24 can be made of transparent plastic material and is relatively thick. The handle 22 and the hole 23 can be arranged on the upper tube 24 superior.

Referring to FIGS. 1 and 2 , in this embodiment, a limit block 5 is provided at the connection between the upper pipe 24 and the lower pipe 25 . It should be noted that the limit block 5 is made of rubber or plastic. The limiting block 5 is used to connect with the spring 3 , and the side wall of the limiting block 5 is in contact with the side wall of the syringe cavity 11 to prevent the puncture needle 2 from shifting left and right during puncturing.

Referring to FIG. 1 , in this embodiment, the syringe 1 further includes a dilator 14, the dilator 14 is funnel-shaped, and the dilator 14 is located at the head of the syringe 1. Because the dilator 14 plays the role of skin expansion when the puncture needle 2 penetrates the skin, the material of the dilator 14 can be selected from medical-grade plastic, which meets the surgical requirements.

The process of puncturing is explained here:

1. Patient position:

The patient lies supine with the lower extremity straight, slightly abducted and externally rotated. If the patient is a young child, abduct the thigh at 45° to the long axis of the body, place a small pillow under the thigh, bend the calf at 90° to the thigh, and fix it by an assistant. The puncture point is 2 to 3 centimeters (cm) below the middle of the inguinal ligament, about 0.5 cm medial to the femoral artery pulse.

2. How to use the puncture device:

①Place puncture needle and syringe: Gently compress the skin and femoral vein at the puncture point, and slightly fix it on the inside of the pulsating femoral artery; the scale 15 on the syringe can be used to assist positioning, and finally determine the puncture point; The needle of the puncture needle is inclined upward, and the needle tip is at an angle of 30° to 45° to the skin; the exposed needle tip is pierced into the skin, and the dilator is moved left and right to enter the subcutaneous. After entering the subcutaneous tissue, hold the needle handle with the right hand and push it down slowly. Generally, the needle insertion depth is 2 to 5 cm; during the puncture process, slow down the movement and observe whether there is blood returning in the needle core and the color of the blood. If the blood color is bright red and If the blood flow is fast, it means that the puncture needle has penetrated into the femoral artery; otherwise, it means that the puncture is successful.

②Insert the guide wire: insert the guide wire into the cavity of the puncture needle to ensure that the guide wire enters the blood vessel for 10 cm. During the insertion process, attention should be paid to the change of heart rate; after the guide wire is relatively fixed, withdraw the puncture needle and compress to stop the bleeding. The depth should not exceed 15cm, so as not to stimulate the heart and cause arrhythmia.

③Introduction catheter: Put the catheter on the outside of the guide wire, hold the end of the guide wire in the left hand, and insert the catheter in the right hand. After the catheter enters the femoral vein, push the catheter into the femoral vein while withdrawing the guide wire. The depth of the adult catheter is about 12 ~ 15cm.

④Verify that the catheter is in the femoral vein: withdraw the blood in the catheter with a 5 milliliter (ml) syringe, flush the catheter with normal saline, and cover the heparin cap. The catheter can be fixed with a suture needle at the entrance of the skin and covered with film for protection.

It should be noted that, although the above embodiments have been described herein, it does not limit the scope of the patent protection of the present invention. Therefore, based on the innovative concept of the present invention, changes and modifications to the embodiments described herein, or equivalent structures or equivalent process transformations made by using the contents of the description and accompanying drawings of the present invention, directly or indirectly apply the above technologies The application of the solution in other related technical fields is included in the protection scope of the patent for this utility model.

Claims (10)

1. A femoral vein puncture device is characterized by comprising a needle cylinder and a puncture needle;

the needle cylinder comprises a needle cylinder cavity, a sliding groove and a plurality of clamping grooves, the needle cylinder cavity is arranged in the needle cylinder, the needle cylinder cavity is communicated with the head of the needle cylinder and the tail of the needle cylinder, the needle cylinder cavity is used for accommodating a puncture needle, the sliding groove is arranged on the outer wall of the needle cylinder and communicated with the needle cylinder cavity, one end of the sliding groove is also communicated with the needle cylinder cavity positioned on the tail of the needle cylinder, the clamping grooves are arranged on the outer wall of the needle cylinder and communicated with the needle cylinder cavity, the clamping grooves are also communicated with the sliding groove, and the plurality of clamping grooves are sequentially arranged on the tail of the needle cylinder in the direction towards the head of the needle cylinder;

the puncture needle is provided with a handle, the handle is used for moving along the sliding groove, and the handle is also used for being clamped in the clamping groove.

2. The femoral vein puncture device according to claim 1, wherein the outer wall of the needle cylinder is provided with a scale, and the zero scale line of the scale is flush with the tail part of the needle cylinder.

3. The femoral vein puncturing device of claim 2, wherein said scale has a range of 5cm or more.

4. The femoral vein puncture device according to claim 1, wherein the puncture needle comprises a puncture needle cavity, the puncture needle cavity is arranged in the puncture needle, the puncture needle cavity is communicated with the head of the puncture needle and the tail of the puncture needle, and the puncture needle cavity is used for accommodating a guide wire.

5. The femoral vein puncture device according to claim 4, wherein the puncture needle further comprises a hole, and the hole is arranged on the outer wall of the puncture needle and is communicated with the puncture needle cavity.

6. The femoral vein puncturing device of claim 5, further comprising a guide wire, wherein the guide wire is J-shaped.

7. The femoral vein puncture device according to claim 1 or 4, wherein the puncture device further comprises a baffle plate and a spring, the baffle plate is arranged in the cavity of the needle cylinder, the baffle plate is positioned between the sliding groove and the head part of the needle cylinder, the spring is arranged on the baffle plate, and the spring is used for being sleeved on the outer wall of the puncture needle.

8. The femoral vein puncture device according to claim 7, wherein the puncture needle comprises an upper tube and a lower tube, the upper tube has a width larger than that of the lower tube, the head of the puncture needle is located on one side of the upper tube away from the lower tube, and a stopper is arranged at the joint of the upper tube and the lower tube and is connected with the spring.

9. The femoral vein puncturing device of claim 8, wherein the stopper is a rubber stopper.

10. The femoral vein puncture device according to claim 1, wherein the needle cylinder further comprises a dilator, the dilator is funnel-shaped, and the dilator is located at the head of the needle cylinder.

Images