Subclavian venipuncture auxiliary device

Abstract

The invention relates to the technical field of medical auxiliary equipment, in particular to a subclavian venipuncture auxiliary device which comprises a needle cylinder, and a push rod is slidably connected to the inner wall of the needle cylinder; the limiting sliding block drives one end of the needle tube to slide upwards, then the needle tube moves backwards by a certain distance, the needle tube is moved out of a blood vessel, then when the device is not completely pulled out, the position of the needle tube is adjusted, and the needle tube can be pushed again for puncturing; the guide wire I is limited through the inverted cone block, so that the guide wire I can only slide towards one side; a plurality of indwelling tubes can be integrated together through the catheter assembly, the area of the indwelling tubes is reduced, an inner cavity of the installation shell is divided into a plurality of cavities by triangular partition plates, special-shaped protection blocks in all the cavities can achieve different functions, a plurality of existing catheters are integrated into the inner cavity of the deep jugular vein catheter, the area of the device is reduced, and the device is convenient to use. Therefore, the friction force borne by the device attached to the body surface of the patient is small.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, in particular to a subclavian vein puncture auxiliary device. Background Art

[0002] Subclavian vein puncture is a technique for placing a catheter and infusing fluids through the subclavian vein. First of all, medical staff must strictly follow the principle of aseptic operation and use a professional injection needle to accurately puncture the subclavian vein through the skin. This operation requires the operator to have rich anatomical knowledge and superb puncture skills to ensure the accuracy and safety of the puncture and avoid damage to surrounding important tissues and blood vessels. After successful puncture, a thin plastic tube or silicone rubber tube is cleverly introduced into the needle. These catheter materials have good biocompatibility, which can not only ensure the smooth delivery of liquids or drugs, but also reduce the stimulation to the inner wall of the blood vessel. One end of the thin plastic tube or silicone rubber tube is located in the subclavian vein, and the other end extends outside the body to connect with the infusion device.

[0003] This technology has a wide range of applications. On the one hand, it can be used to infuse high-nutrient fluids. For patients who cannot eat normally or who are undernourished for various reasons, it can provide them with necessary nutritional support, maintain the body's metabolic needs, and promote physical recovery. On the other hand, it is also often used for drug infusion to ensure that the drug can reach the target site quickly and accurately, thereby improving the treatment effect. In addition, this technology also has the important function of measuring central venous pressure at any time, which helps to adjust the treatment plan in time, reasonably replenish blood volume, and maintain the patient's circulation stability.

[0004] However, during the existing subclavian vein puncture, the puncture needle enters the wrong blood vessel and needs to be pulled out and reinserted in time. In addition, the subclavian vein is close to many important blood vessels and nerves, so these structures may be damaged during puncture, causing bleeding or hematoma. At the same time, when the puncture needle is inserted into the vein, the guide wire and catheter need to be inserted in sequence. When inserting the guide wire, there is no locking structure, and the guide wire will retract when it encounters resistance when pushing it. It is time-consuming and laborious. In addition, the intravenous catheter has many joints. When it is left on the surface of the human body, it is easy to contact and rub against the skin and clothing, which can easily cause the intravenous catheter to shift.

[0005] Therefore, a subclavian vein puncture auxiliary device is needed to improve the above problems. Summary of the invention

[0006] The present invention provides a subclavian vein puncture auxiliary device to solve the above problems.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A subclavian vein puncture auxiliary device comprises a syringe, a push rod is slidably connected to the inner wall of the syringe, a mounting groove is provided on the outer wall of the push rod, a piston is arranged at one end of the push rod, wherein the piston is located in the inner cavity of the syringe, and the piston and the syringe are connected in a sliding manner, a needle housing is arranged at one end of the syringe, wherein a needle assembly is arranged on the inner wall of the needle housing, a guide needle housing is arranged on the side wall of the needle housing, wherein one end of the guide needle housing extends to the inner cavity of the needle housing, and the cross-section of the guide needle housing located in the inner cavity of the needle housing is an arc-shaped structure, an inverted cone block is arranged on the inner wall of the guide needle housing, wherein a guide wire 1 is slidably connected to one side of the inverted cone block and located on the inner wall of the guide needle housing, and a catheter assembly is installed at one end of the guide wire 1.

[0009] As a preferred solution of the present invention, the needle assembly includes a needle tube and a limiting slider, the needle tube is slidably connected to the inner wall of the needle housing, a connecting groove is provided on the outer wall of the needle tube, and the connecting groove is located on one side of the guide needle housing, and one end of the guide wire is slidably connected to the inner wall of the needle tube.

[0010] As a preferred solution of the present invention, one end of the needle tube passes through the piston and the push rod in sequence and extends to the inner cavity of the mounting groove, wherein the push rod and the needle tube are connected by a sliding connection, and the limiting slider is slidably connected to the inner wall of the mounting groove.

[0011] As a preferred solution of the present invention, one end of the needle tube is connected to the outer wall of the limit slider, a limit spring is provided on one side of the needle tube and on the outer wall opposite to the limit slider, and one end of the limit spring is connected to the inner wall of the push rod.

[0012] As a preferred solution of the present invention, the catheter assembly includes guide wire 2, one end of which is plugged and connected to the outer wall of guide wire 1, the other end of guide wire 2 is provided with a deep cervical vein catheter, one end of the deep cervical vein catheter is provided with a guide block, and the other end of the deep cervical vein catheter is provided with an installation shell.

[0013] As a preferred solution of the present invention, a triangular partition is provided on the inner wall of the mounting shell, a special-shaped protective block is provided in the inner cavity of the triangular partition and located on the inner wall of the mounting shell, and an inner conduit is provided on one side of the special-shaped protective block and located in the inner cavity of the mounting shell.

[0014] As a preferred solution of the present invention, the inner catheter is located in the inner cavity of the deep jugular vein catheter, and multiple groups of inner catheters are arranged and respectively located on the inner wall of the deep jugular vein catheter, and the outer wall of the deep jugular vein catheter is provided with fixed wings.

[0015] As a preferred solution of the present invention, a transparent plate is provided on the outer wall of the syringe, scale lines are provided on one side of the transparent plate and on the outer wall opposite to the syringe, and a winding block is provided on the outer wall of the syringe, wherein the winding block is located directly above the transparent plate.

[0016] Compared with the prior art, the present invention can adjust the position of the needle tube by arranging a needle assembly in the subclavian vein puncture auxiliary device. When the limiting slider drives one end of the needle tube to slide upward, the needle tube is moved backward by one end to move the needle tube out of the blood vessel. Then, when the device is not completely pulled out, the position of the needle tube is adjusted and the needle tube can be pushed again for puncture to reduce the damage to the tissue near the vein caused by repeated puncture after the puncture error. This solves the problem of the puncture needle entering the wrong blood vessel and needing to be pulled out and reinserted in time. The subclavian vein is close to many important blood vessels and nerves, so these structures may be damaged during puncture, resulting in bleeding or hematoma.

[0017] The present invention arranges an inverted cone block in the subclavian vein puncture auxiliary device. When the guide wire slides to one side, the inverted cone block limits the guide wire so that the guide wire can only slide to one side. At the same time, the guide wire passes through the connecting groove and enters the inner cavity of the needle tube. After the guide wire enters the appropriate position, the problem that when inserting the guide wire, there is no locking structure, and the guide wire encounters resistance when being pushed, and the guide wire will retract, which is time-consuming and labor-intensive.

[0018] The present invention can integrate multiple indwelling tubes together and reduce the area of ​​the indwelling tubes by arranging a catheter assembly in the subclavian vein puncture auxiliary device. The inner cavity of the installation shell is divided into multiple cavities by a triangular partition. The special-shaped protective blocks in each cavity can respectively play different functions. The existing multiple catheters are integrated into the inner cavity of the deep jugular vein catheter, which reduces the area of ​​the device, thereby making the friction force on the patient's body surface smaller, thereby solving the problem that the venous catheter has many joints and is easily in contact and rubbed with the skin and clothing when indwelling on the human body surface, which easily causes the venous catheter to shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a side view structural schematic diagram of the present invention;

[0021] Figure 3 It is a rear view structural schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the syringe of the present invention;

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the left view structure;

[0024] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure of A;

[0025] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the B structure;

[0026] Figure 8 For the present invention Figure 4 Schematic diagram of the enlarged C structure.

[0027] In the figure: 1. syringe; 2. push rod; 3. mounting groove; 4. piston; 5. needle housing; 6. needle assembly; 601. needle tube; 602. limit slider; 603. connecting groove; 604. limit spring; 7. guide needle housing; 8. inverted cone block; 9. guide wire one; 10. catheter assembly; 1001. guide wire two; 1002. deep cervical vein catheter; 1003. guide block; 1004. mounting housing; 1005. triangular partition; 1006. special-shaped protective block; 1007. inner catheter; 1008. fixed wing; 11. transparent plate; 12. scale line; 13. winding block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Example: See Figure 1-8 A subclavian vein puncture auxiliary device is shown, comprising a syringe 1, a push rod 2 is slidably connected to the inner wall of the syringe 1, a mounting groove 3 is provided on the outer wall of the push rod 2, a piston 4 is provided at one end of the push rod 2, wherein the piston 4 is located in the inner cavity of the syringe 1, and the connection mode of the piston 4 and the syringe 1 is a sliding connection, a needle housing 5 is provided at one end of the syringe 1, wherein a needle assembly 6 is provided on the inner wall of the needle housing 5, a guide needle housing 7 is provided on the side wall of the needle housing 5, wherein one end of the guide needle housing 7 extends to the inner cavity of the needle housing 5, and the cross-section of the guide needle housing 7 located in the inner cavity of the needle housing 5 is an arc-shaped structure, an inverted cone block 8 is provided on the inner wall of the guide needle housing 7, wherein a guide wire 9 is slidably connected to one side of the inverted cone block 8 and located on the inner wall of the guide needle housing 7, and a catheter assembly 10 is installed at one end of the guide wire 9.

[0030] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8 The needle assembly 6 includes a needle tube 601 and a limiting slider 602, the needle tube 601 is slidably connected to the inner wall of the needle housing 5, wherein a connecting groove 603 is provided on the outer wall of the needle tube 601, and the connecting groove 603 is located on one side of the guide needle housing 7, one end of the guide wire 9 is slidably connected to the inner wall of the needle tube 601, one end of the needle tube 601 passes through the piston 4 and the push rod 2 in sequence and extends to the inner cavity of the mounting groove 3, wherein the connection mode of the push rod 2 and the needle tube 601 is a sliding connection, the limiting slider 602 is slidably connected to the inner wall of the mounting groove 3, one end of the needle tube 601 is connected to the outer wall of the limiting slider 602, a limiting spring 604 is provided on one side of the needle tube 601 and on the outer wall opposite to the limiting slider 602, and one end of the limiting spring 604 is connected to the inner wall of the push rod 2.

[0031] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The catheter assembly 10 includes a guide wire 1001, one end of which is plugged and connected to the outer wall of the guide wire 1001, and the other end of the guide wire 1001 is provided with a deep cervical vein catheter 1002, one end of the deep cervical vein catheter 1002 is provided with a guide block 1003, and the other end of the deep cervical vein catheter 1002 is provided with a mounting shell 1004, and a triangular partition 1005 is provided on the inner wall of the mounting shell 1004, and a special-shaped protective block 1006 is provided in the inner cavity of the triangular partition 1005 and located on the inner wall of the mounting shell 1004, and an inner catheter 1007 is provided on one side of the special-shaped protective block 1006 and located in the inner cavity of the mounting shell 1004, and the inner catheter 1007 is located in the inner cavity of the deep cervical vein catheter 1002, and the inner catheter 1007 is provided in multiple groups and respectively located on the inner wall of the deep cervical vein catheter 1002, and a fixing wing 1008 is provided on the outer wall of the deep cervical vein catheter 1002;

[0032] Based on the above structural features and connection relationship, the outer wall of the deep jugular vein catheter 1002 is provided with a fixing wing 1008. When the deep jugular vein catheter 1002 is inserted into the vein, the fixing wing 1008 is fixed to the skin of the body surface at the puncture site through a cotton thread. At the same time, when the deep jugular vein catheter 1002 is punctured and inserted, the guide wire 1001 and the guide wire 19 are inserted into the inner cavity of the deep jugular vein catheter 1002.

[0033] A transparent plate 11 is provided on the outer wall of the syringe 1 , a scale line 12 is provided on one side of the transparent plate 11 and on the outer wall opposite to the syringe 1 , and a winding block 13 is provided on the outer wall of the syringe 1 , wherein the winding block 13 is located directly above the transparent plate 11 .

[0034] When the subclavian vein puncture auxiliary device of this scheme is in operation, the syringe 1 is held, and after the position of the patient's subclavian vein is determined, the needle tube 601 is inserted into the patient's skin, so that the needle tube 601 is attached to the surface of the clavicle, and then the needle tube 601 is inserted into the patient's blood vessel, and the blood in the blood vessel passes through the needle tube 601, and the blood enters the inner cavity of the syringe 1 through the connecting groove 603, so that the medical staff observes the color of the blood through the transparent plate 11. The color of the venous blood is dark red. If the color of the blood is found to be wrong, the needle tube 601 needs to be pulled out in time;

[0035] By pulling the limit slider 602, the limit slider 602 slides upward on the inner wall of the installation groove 3. When the limit slider 602 slides, the limit slider 602 drives one end of the needle tube 601 to slide upward, and then the needle tube 601 moves one end distance to the rear side, so that the needle tube 601 moves out of the blood vessel. Then, when the device is not completely pulled out, the position of the needle tube 601 is adjusted, and the needle tube 601 can be pushed again for puncture to reduce the damage to the tissue near the vein caused by completely pulling out the needle for repeated puncture after puncture errors, thereby solving the problem of the puncture needle entering the wrong blood vessel and needing to be pulled out and reinserted in time. In addition, the subclavian vein is close to many important blood vessels and nerves, so these structures may be damaged during puncture, resulting in bleeding or hematoma problems;

[0036] When the needle tube 601 is inserted into the deep vein, the medical staff then applies a thrust to the guide wire 9, so that the guide wire 9 slides along the guide needle housing 7. Since the inner cavity of the guide needle housing 7 is provided with an inverted cone block 8, when the guide wire 9 slides to one side, the inverted cone block 8 limits the guide wire 9, so that the guide wire 9 can only slide to one side. At the same time, the guide wire 9 enters the inner cavity of the needle tube 601 through the connecting groove 603. After the guide wire 9 enters the appropriate position, the problem of encountering resistance when pushing the guide wire due to the lack of a locking structure during the insertion of the guide wire is solved, and the guide wire will retract, which is relatively time-consuming and labor-intensive.

[0037] After the needle housing 5 and the guide wire 9 are disconnected, the guide wire 1001 is inserted into one end of the guide wire 9 for fixing, and then a thrust is applied to the deep jugular vein catheter 1002 to push the deep jugular vein catheter 1002 along the guide wire 1001 and the guide wire 9. At the same time, when the guide block 1003 contacts the skin, the guide block 1003 plays a role of expanding the hole, and when the deep jugular vein catheter 1002 is inserted into a suitable position, since there are multiple groups of special-shaped protective blocks 1006, and the inner cavity of the mounting housing 1004 is divided into multiple cavities by the triangular partition 1005, the special-shaped protective blocks 1006 in each cavity can respectively play different functions, and the existing multiple catheters are gathered into the inner cavity of the deep jugular vein catheter 1002, the area of ​​the device is reduced, and the friction force received by the device when it is attached to the patient's body surface is smaller, thereby solving the problem that the venous catheter has many joints, and when it is left on the surface of the human body, it is easy to contact and rub with the skin and clothes, which can easily cause the venous catheter to shift and has poor practicality.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subclavian vein puncture assisting device, comprising a syringe (1), characterized in that: A push rod (2) is slidably connected to the inner wall of the syringe (1), and a mounting groove (3) is provided on the outer wall of the push rod (2). A piston (4) is provided at one end of the push rod (2), wherein the piston (4) is located in the inner cavity of the syringe (1), and the piston (4) and the syringe (1) are connected in a sliding manner. A needle housing (5) is provided at one end of the syringe (1), wherein a needle assembly (6) is provided on the inner wall of the needle housing (5), and the needle housing ( A guide needle housing (7) is arranged on the side wall of the needle housing (5), wherein one end of the guide needle housing (7) extends to the inner cavity of the needle housing (5), and the cross-section of the guide needle housing (7) located in the inner cavity of the needle housing (5) is an arc-shaped structure, and an inverted cone block (8) is arranged on the inner wall of the guide needle housing (7), wherein a guide wire (9) is slidably connected to one side of the inverted cone block (8) and located on the inner wall of the guide needle housing (7), and a catheter assembly (10) is installed at one end of the guide wire (9).

2. A subclavian vein puncture assisting device according to claim 1, characterized in that: The needle assembly (6) comprises a needle tube (601) and a limiting slider (602), wherein the needle tube (601) is slidably connected to the inner wall of the needle housing (5), wherein a connecting groove (603) is provided on the outer wall of the needle tube (601), and the connecting groove (603) is located on one side of the guide needle housing (7), and one end of the guide wire (9) is slidably connected to the inner wall of the needle tube (601).

3. A subclavian vein puncture assisting device according to claim 2, characterized in that: One end of the needle tube (601) passes through the piston (4) and the push rod (2) in sequence and extends to the inner cavity of the mounting groove (3), wherein the push rod (2) and the needle tube (601) are connected in a sliding manner, and the limiting slider (602) is slidably connected to the inner wall of the mounting groove (3).

4. A subclavian vein puncture assisting device according to claim 3, characterized in that: One end of the needle tube (601) is connected to the outer wall of the limit slider (602), and a limit spring (604) is provided on one side of the needle tube (601) and on the outer wall opposite to the limit slider (602), and one end of the limit spring (604) is connected to the inner wall of the push rod (2).

5. A subclavian vein puncture assisting device according to claim 1, characterized in that: The catheter assembly (10) comprises a guide wire 2 (1001), one end of which is pluggably connected to the outer wall of the guide wire 1 (9), the other end of which is provided with a deep cervical vein catheter (1002), one end of which is provided with a guide block (1003), and the other end of which is provided with a mounting shell (1004).

6. A subclavian vein puncture assisting device according to claim 5, characterized in that: A triangular partition (1005) is arranged on the inner wall of the installation shell (1004), a special-shaped protective block (1006) is arranged in the inner cavity of the triangular partition (1005) and located on the inner wall of the installation shell (1004), and an inner conduit (1007) is arranged on one side of the special-shaped protective block (1006) and located in the inner cavity of the installation shell (1004).

7. A subclavian vein puncture assisting device according to claim 6, characterized in that: The inner catheter (1007) is located in the inner cavity of the deep jugular vein catheter (1002), and multiple groups of inner catheters (1007) are arranged and respectively located on the inner wall of the deep jugular vein catheter (1002), and fixed wings (1008) are arranged on the outer wall of the deep jugular vein catheter (1002).

8. A subclavian vein puncture assisting device according to claim 1, characterized in that: A transparent plate (11) is provided on the outer wall of the syringe (1), a scale line (12) is provided on one side of the transparent plate (11) and on the outer wall opposite to the syringe (1), and a winding block (13) is provided on the outer wall of the syringe (1), wherein the winding block (13) is located directly above the transparent plate (11).

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