Catheter sheath assembly for vascular puncture

Abstract

The utility model relates to the technical field of medical instruments, and discloses a catheter sheath assembly for vascular puncture, which comprises a mounting block, the bottom of the inner side of the mounting block is in threaded connection with a threaded column, the bottom of the threaded column is rotatably connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a catheter, the inner side of the catheter is provided with a needle tube, and the needle tube is fixedly connected with the mounting plate. Fixing blocks are fixedly connected to the left side and the right side of the outer wall of the mounting block, a binding belt is fixedly connected to the inner side of the fixing block on the left side, a buckle is fixedly connected to the outer side of the binding belt, the right side of the buckle is clamped with the fixing block, and a positioning mechanism is arranged on the outer side of the mounting plate. According to the device, through cooperation of the installation block, the threaded column and the insertion rod, the device can be fixed to a patient, the device can be fixed to the patient, and through cooperation of the gear ring, the rack rod and the positioning ring, tissue around the catheter can be pressed to prevent blood from overflowing or leaking.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a catheter sheath component for blood vessel puncture. Background Art

[0002] Vascular puncture is a medical procedure used to insert a catheter into a human blood vessel, usually for obtaining blood samples, infusing fluids, administering medication, or performing other therapeutic purposes. During vascular puncture, a catheter sheath assembly is required to minimize vascular damage and blood spillage.

[0003] Most of the catheter sheath assemblies currently available on the market for vascular puncture cannot properly secure themselves to the patient during actual use. The lack of fixation can cause the catheter or catheter sheath to become unstable during puncture or use, thereby increasing the risk of complications such as vascular damage or infection, thereby reducing the reliability of the device. Utility Model Content

[0004] In order to make up for the above shortcomings, the present invention provides a catheter sheath assembly for vascular puncture, aiming to improve the problem in the prior art that the device is inconvenient to fix to the patient.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a catheter sheath assembly for vascular puncture, comprising a mounting block, the inner bottom of the mounting block is threadedly connected to a threaded column, the bottom of the threaded column is rotatably connected to a mounting plate, the bottom of the mounting plate is fixedly connected to a catheter, a needle tube is provided on the inner side of the catheter, the left and right sides of the outer wall of the mounting block are fixedly connected to fixed blocks, the inner side of the fixed block on the left side is fixedly connected to a restraining belt, the outer side of the restraining belt is fixedly connected to a buckle, the fixed block on the right side of the buckle is engaged, and a positioning mechanism is provided on the outer side of the mounting plate.

[0006] As a further description of the above technical solution:

[0007] The positioning mechanism includes a positioning ring, which is fixedly connected to the outer side of the mounting plate. A plurality of rack rods are slidably connected to the inner side of the positioning ring. A gear ring is rotatably connected to the outer bottom of the positioning ring. The gear ring is meshed with the rack rod. Connection holes are provided on the outer sides of the plurality of rack rods, and a rubber pad is fixedly connected to the inner side of the connection hole.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the needle tube is provided with a plurality of through holes.

[0010] As a further description of the above technical solution:

[0011] A needle hole is provided at the bottom of the needle tube.

[0012] As a further description of the above technical solution:

[0013] A plurality of positioning holes are fixedly connected to the outer wall of the installation block, and positioning blocks are provided on the inner sides of the plurality of positioning holes.

[0014] As a further description of the above technical solution:

[0015] The top of the mounting block is fixedly connected to a top plate, and the top of the top plate is fixedly connected to a handle.

[0016] As a further description of the above technical solution:

[0017] The outer side of the handle is fixedly connected with a sheath.

[0018] As a further description of the above technical solution:

[0019] The outer side of the restraint belt is fixedly connected with a fixing groove.

[0020] As a further description of the above technical solution:

[0021] A plug-in rod is fixedly connected to the middle portion of the top end of the inner wall of the mounting block, and the plug-in rod is engaged with the threaded column.

[0022] As a further description of the above technical solution:

[0023] The needle tube and the catheter are both made of rubber.

[0024] The utility model has the following beneficial effects:

[0025] 1. In the present invention, the mounting block can be rotated to be removed from the threaded column through the threaded connection for quick disassembly and assembly. At the same time, the engagement of the connecting rod and the threaded column can improve its firmness during installation. By pulling the restraint belt to fix it to the patient, and then engaging the buckle on it with the fixing block, the device can be fixed to the patient, and the device itself can be fixed to the patient, thereby improving the stability of the catheter sheath during puncture and facilitating quick disassembly and assembly before and after use, thereby improving the reliability of the device.

[0026] 2. In the present invention, the rack rod can be driven to move back and forth along the positioning ring through meshing transmission by rotating the gear ring. The moving rack rod can drive the rubber pad to expand and contract through the connecting hole, which can compress the tissue around the catheter to prevent blood overflow or leakage, and help prevent blood blockage or hematoma formation, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a three-dimensional diagram of a catheter sheath assembly for blood vessel puncture proposed by the present invention;

[0028] Figure 2 This is a schematic diagram of the threaded column structure of a catheter sheath assembly for vascular puncture proposed by the present invention;

[0029] Figure 3 This is a schematic diagram of a positioning mechanism of a catheter sheath assembly for vascular puncture proposed by the present invention.

[0030] Legend:

[0031] 1. Mounting block; 2. Positioning mechanism; 201. Positioning ring; 202. Rack rod; 203. Connecting hole; 204. Gear ring; 205. Rubber pad; 3. Threaded column; 4. Mounting plate; 5. Catheter; 6. Needle tube; 7. Fixing block; 8. Connecting rod; 9. Restraint belt; 10. Buckle; 11. Fixing slot; 12. Top plate; 13. Positioning block; 14. Positioning hole; 15. Handle; 16. Sheath; 17. Through hole; 18. Needle hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1 、 Figure 2 and Figure 3 The utility model provides an embodiment of a catheter sheath assembly for vascular puncture, comprising a mounting block 1, a threaded column 3 is threadedly connected to the bottom inner side of the mounting block 1, a mounting plate 4 is rotatably connected to the bottom of the threaded column 3, a catheter 5 is fixedly connected to the bottom of the mounting plate 4, a needle tube 6 is provided on the inner side of the catheter 5, and a fixing block 7 is fixedly connected to the left and right sides of the outer wall of the mounting block 1, a restraining belt 9 is fixedly connected to the inner side of the left fixing block 7, a buckle 10 is fixedly connected to the outer side of the restraining belt 9, the buckle 10 is engaged with the fixing block 7 on the right side, and a positioning mechanism 2 is provided on the outer side of the mounting plate 4;

[0034] Specifically, by rotating the mounting block 1, the threaded mounting block 1 and the threaded column 3 can be quickly disassembled. At the same time, the combination of the connecting rod 8 and the threaded column 3 can enhance the firmness of the device during installation. Pull the restraint belt 9 to fix the device on the patient, and then connect the buckle 10 to the fixing block 7 to ensure the fixation between the device and the patient. This design improves the stability of the catheter sheath during puncture and facilitates quick disassembly and assembly before and after use.

[0035] Reference Figure 1 and Figure 3 The positioning mechanism 2 includes a positioning ring 201, which is fixedly connected to the outer side of the mounting plate 4. A plurality of rack rods 202 are slidably connected to the inner side of the positioning ring 201. A gear ring 204 is rotatably connected to the outer bottom of the positioning ring 201. The gear ring 204 is meshed with the rack rod 202. The outer sides of the plurality of rack rods 202 are each provided with a connecting hole 203. A rubber pad 205 is fixedly connected to the inner side of the connecting hole 203.

[0036] Specifically, by rotating the gear ring 204, the rack rod 202 can move back and forth along the positioning ring 201, and this movement is achieved through meshing transmission. As the rack rod 202 moves, the connecting hole 203 will also drive the rubber pad 205 to expand or contract. This design can apply pressure to the tissue around the catheter 5, effectively preventing blood overflow or leakage, and thus helping to prevent blood blockage or hematoma formation.

[0037] Reference Figure 1 and Figure 3 The outer wall of the needle tube 6 is provided with a plurality of through holes 17; the bottom of the needle tube 6 is provided with a needle hole 18;

[0038] Specifically, the through hole 17 can prevent the needle tube 6 from affecting or blocking blood flow when inside the blood vessel, and the inclined needle hole 18 can facilitate the insertion of the needle tube 6 into the patient's skin.

[0039] Reference Figure 1 and Figure 2 The outer wall of the mounting block 1 is fixedly connected with a plurality of positioning holes 14, and the inner sides of the plurality of positioning holes 14 are provided with positioning blocks 13; the top of the mounting block 1 is fixedly connected with a top plate 12, and the top of the top plate 12 is fixedly connected with a handle 15; the outer side of the handle 15 is fixedly connected with a sheath 16;

[0040] Specifically, by installing a screw in the positioning hole 14 on the positioning block 13, the device can be easily fixed, and the handle 15 can be used to facilitate moving and storing the device. The sheath 16 thereon can increase the friction of the handle 15 for easy holding.

[0041] Reference Figure 1 、 Figure 2 and Figure 3 , the outer side of the restraint belt 9 is fixedly connected with a fixing groove 11; the middle part of the top of the inner wall of the mounting block 1 is fixedly connected with a plug rod 8, and the plug rod 8 is engaged with the threaded column 3; the material of the needle tube 6 and the catheter 5 are both rubber material;

[0042] Specific, by fixed groove 11 can enhance the friction between the restraint belt 9 and the mounting block 1, by inserting rod 8 and the screw column 3 can be engaged, can enhance its firmness when fixed, needle tube 6 and the catheter 5 material is rubber material, the use of rubber material can make needle tube 6 and the catheter 5 is relatively soft, reduce the discomfort of patients.

[0043] Working principle: before using the device, first by rotating the mounting block 1, can be separated from the threaded column 3 by threaded connection, in order to quickly disassemble, at the same time, by inserting rod 8 and the screw column 3 can be engaged, can enhance the stability when installing, pull the restraint belt 9 can be fixed to the patient, then buckle 10 and fixed block 7 connected to ensure the stability of the device and the patient between the connection, this design improves the stability of the catheter sheath during puncture, also facilitates the quick disassembly before and after use, thereby improving the reliability of the device, and by rotating the gear ring 204, can be achieved by meshing transmission rack bar 202 along the positioning ring 201 move back and forth, moving rack bar 202 can be driven by the connecting hole 203 rubber pad 205 extension and retracting, so as to exert pressure on the tissue around the catheter 5, to prevent blood spillage or leakage, help to prevent blood clots or hematoma formation, thereby improving the practicability of the device.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application have, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing examples, for the skilled person, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A catheter sheath assembly for vascular puncture, comprising a mounting block (1), characterized in that: The bottom inner side of the mounting block (1) is threadedly connected to a threaded column (3), the bottom of the threaded column (3) is rotatably connected to a mounting plate (4), the bottom of the mounting plate (4) is fixedly connected to a catheter (5), the inner side of the catheter (5) is provided with a needle tube (6), the left and right sides of the outer wall of the mounting block (1) are fixedly connected to fixed blocks (7), the inner side of the left fixed block (7) is fixedly connected to a restraining belt (9), the outer side of the restraining belt (9) is fixedly connected to a buckle (10), the right side of the buckle (10) is engaged with the fixed block (7), and the outer side of the mounting plate (4) is provided with a positioning mechanism (2).

2. The catheter sheath assembly for vascular puncture according to claim 1, characterized in that: The positioning mechanism (2) comprises a positioning ring (201), the positioning ring (201) is fixedly connected to the outside of the mounting plate (4), a plurality of rack rods (202) are slidably connected to the inside of the positioning ring (201), a gear ring (204) is rotatably connected to the bottom of the outside of the positioning ring (201), the gear ring (204) is meshedly connected to the rack rod (202), the outsides of the plurality of rack rods (202) are all provided with connecting holes (203), and the insides of the connecting holes (203) are fixedly connected to rubber pads (205).

3. The catheter sheath assembly for vascular puncture according to claim 1, characterized in that: The outer wall of the needle tube (6) is provided with a plurality of through holes (17).

4. The catheter sheath assembly for vascular puncture according to claim 1, characterized in that: A needle hole (18) is provided at the bottom of the needle tube (6).

5. The catheter sheath assembly for blood vessel puncture according to claim 1, characterized in that: A plurality of positioning holes (14) are fixedly connected to the outer wall of the installation block (1) on all sides, and a positioning block (13) is provided on the inner side of each of the plurality of positioning holes (14).

6. The catheter sheath assembly for blood vessel puncture according to claim 1, characterized in that: The top of the mounting block (1) is fixedly connected to a top plate (12), and the top of the top plate (12) is fixedly connected to a handle (15).

7. The catheter sheath assembly for blood vessel puncture according to claim 6, characterized in that: The outer side of the handle (15) is fixedly connected with a sheath (16).

8. The catheter sheath assembly for blood vessel puncture according to claim 1, characterized in that: The outer side of the restraining belt (9) is fixedly connected with a fixing groove (11).

9. The catheter sheath assembly for blood vessel puncture according to claim 1, characterized in that: A plug-in rod (8) is fixedly connected to the middle portion of the top end of the inner wall of the installation block (1), and the plug-in rod (8) is engaged with the threaded column (3).

10. The catheter sheath assembly for blood vessel puncture according to claim 1, characterized in that: The needle tube (6) and the catheter (5) are both made of rubber.

Images