Central venous catheter sealing device

Abstract

The utility model discloses a central venous catheter sealing device, and particularly relates to the technical field of medical instruments, the central venous catheter sealing device comprises a cylinder body, the left end of the cylinder body is rotatably connected with a sleeve, the inner part of the sleeve is connected with a circular plate, the inner part of the circular plate is in threaded connection with a screw rod, and the tail end of the screw rod is connected with a pressing plate; a through hole is formed in the outer side of the barrel, a limiting mechanism is arranged in the through hole, a clamping plate is connected to one end of the limiting mechanism, a fixing base is connected to the inner wall of the barrel, needle tubes are connected to the inner wall of the fixing base and the inner wall of the clamping plate, and negative pressure pistons are connected to the interiors of the needle tubes. The back side of the negative pressure piston is connected with a piston push rod and a rotary sleeve, the pressing plate is driven to descend under the connection effect of a screw hole and a screw rod, then the negative pressure piston is pushed to advance, tube sealing liquid is pushed out, tube sealing operation is completed by operating the rotary sleeve, the operation intensity of hand thenar muscle of a nurse is relieved, and the operation efficiency is improved. The muscular soreness of the hand of the nurse is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a central venous catheter sealing device. Background Art

[0002] Central venous catheters are widely used in clinical practice, mainly for large-volume fluid infusion, intravenous hypernutrition, chemotherapy and parenteral nutrition treatments. Flushing and sealing are important links in the maintenance of central venous catheters, which can effectively prevent catheter blockage, reduce the occurrence of complications, and increase the service life of the catheter. Among them, sealing the central venous catheter mainly involves injecting saline mixed with heparin into the catheter to avoid coagulation in the pipeline and thrombosis, which may cause the pipeline to be unable to infuse fluids smoothly.

[0003] At present, the method of sealing the central venous catheter is: insert the needle into the heparin cap; after aspirating to observe the return of blood, first slowly try to push a small amount of heparin sodium saline sealing solution, after it is unobstructed, withdraw the bevel of the needle into the heparin cap, and use the pulse method, that is, flush and stop, to flush the tube; when there is one to two milliliters of sealing solution left, maintain positive pressure and push the sealing solution while pulling out the needle, so that the indwelling needle catheter is filled with sealing solution. Because it is necessary to use the strength of the thenar muscle of the hand to continuously push the syringe piston to move, nurses are prone to local thenar muscle soreness after operating for a period of time. Utility Model Content

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A central venous catheter sealing device, comprising:

[0006] A cylinder, the left end of which is rotatably connected to a sleeve, the interior of the sleeve is connected to a circular plate, the interior of the circular plate is threadedly connected to a screw, and the end of the screw is connected to a pressing plate;

[0007] A through hole is provided on the outer side of the cylinder, a limiting mechanism is arranged inside the through hole, one end of the limiting mechanism is connected to a splint, a fixing seat is connected to the inner wall of the cylinder at a position corresponding to the through hole, a needle tube is connected to the inner wall of the fixing seat and the splint, a negative pressure piston is connected to the inside of the needle tube, and a piston push rod is connected to the back side of the negative pressure piston.

[0008] In a possible implementation, a slot is formed on the outer side of the pressure plate, and the piston push rod is embedded in the slot.

[0009] In a possible implementation, a slide groove is provided at the left end of the cylinder, a slider is rotatably connected inside the slide groove, and the slider is fixedly connected to the sleeve.

[0010] In a possible implementation manner, a screw hole is opened in the middle position of the circular plate, and the screw hole is threadedly connected to the screw rod.

[0011] In a possible implementation, the limiting mechanism includes a connecting rod connected to the inside of the through hole, one end of the connecting rod is connected to the limiting plate, the other end of the connecting rod is fixedly connected to the clamping plate, a return spring is sleeved on the outer side of the connecting rod, one end of the return spring is fixedly connected to the cylinder, and the other end of the return spring is fixedly connected to the clamping plate.

[0012] In a possible implementation, the clamping plate and the fixing seat are both configured to be arc-shaped.

[0013] In a possible implementation, an observation hole is opened on the outer side of the cylinder at a position away from the through hole.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] Use a syringe to draw physiological saline, connect the scalp needle and then insert it into the cylinder so that the top of the piston push rod is embedded in the slot, and the limit plate is loosened. Under the elastic action of the reset spring, the splint is reset to fix the syringe in the middle position between the fixing seat and the splint. The sleeve is rotated to drive the circular plate to rotate. Through the connection between the screw hole and the screw, the pressure plate is driven down, and the negative pressure piston is pushed forward to push the sealing liquid out. The sealing operation is completed by operating the rotating sleeve, which reduces the operating intensity of the thenar muscles of the nurses' hands and relieves the muscle soreness of the nurses' hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side sectional view of the utility model.

[0019] Description of reference numerals:

[0020] 1. Screw; 2. Sleeve; 3. Cylinder; 4. Limiting plate; 5. Needle tube; 6. Observation hole; 7. Screw hole; 8. Slide groove; 9. Slider; 10. Piston push rod; 11. Negative pressure piston; 12. Fixed seat; 13. Pressure plate; 14. Through hole; 15. Reset spring; 16. Clamp; 17. Round plate; 18. Slot; 19. Connecting rod. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] The embodiments of the present application solve the problems in the prior art by providing a central venous catheter sealing device.

[0023] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0024] Embodiment 1:

[0025] The specific structure of this embodiment is as follows: Figure 1-Figure 2 As shown, a central venous catheter sealing device comprises:

[0026] The cylinder 3, the left end of the cylinder 3 is rotatably connected to the sleeve 2, the inside of the sleeve 2 is connected to the circular plate 17, the inside of the circular plate 17 is threadedly connected to the screw 1, and the end of the screw 1 is connected to the pressing plate 13;

[0027] A through hole 14 is provided on the outer side of the cylinder 3, and a limiting mechanism is arranged inside the through hole 14. A clamping plate 16 is connected to one end of the limiting mechanism. A fixing seat 12 is connected to the inner wall of the cylinder 3 and the position corresponding to the through hole 14. The inner walls of the fixing seat 12 and the clamping plate 16 are both connected with a needle tube 5. A negative pressure piston 11 is connected inside the needle tube 5. A piston push rod 10 is connected to the back side of the negative pressure piston 11. The rotating sleeve 2 drives the circular plate 17 to rotate, and the connection between the screw hole 7 and the screw 1 drives the pressure plate 13 to descend, thereby pushing the negative pressure piston 11 forward, pushing the sealing liquid out, and completing the sealing operation.

[0028] In some examples, a slot 18 is provided on the outer side of the pressure plate 13, and the piston push rod 10 is embedded in the slot 18. By providing the slot 18 and embedding the top end of the piston push rod 10 into the slot 18, it is helpful to prevent the piston push rod 10 from falling off from the pressure plate 13 during rotation.

[0029] In some examples, a slide groove 8 is opened at the left end of the cylinder 3, and a slider 9 is rotatably connected inside the slide groove 8. The slider 9 is fixedly connected to the sleeve 2. Under the connection between the slide groove 8 and the slider 9, the sleeve 2 can rotate conveniently.

[0030] In some examples, a screw hole 7 is opened in the middle position inside the circular plate 17, and the screw hole 7 is threadedly connected to the screw rod 1. The rotating sleeve 2 drives the circular plate 17 to rotate, and the connection between the screw hole 7 and the screw rod 1 drives the pressure plate 13 to descend, thereby pushing the negative pressure piston 11 forward to push out the sealing liquid.

[0031] In some examples, the limiting mechanism includes a connecting rod 19 connected to the inside of the through hole 14, one end of the connecting rod 19 is connected to the limiting plate 4, the other end of the connecting rod 19 is fixedly connected to the splint 16, and a reset spring 15 is sleeved on the outer side of the connecting rod 19, one end of the reset spring 15 is fixedly connected to the cylinder 3, and the other end of the reset spring 15 is fixedly connected to the splint 16. Pulling the limiting plate 4 drives the connecting rod 19 and the splint 16 to move outward, increasing the distance between the splint 16 and the fixed seat 12, making it convenient to place the needle tube 5 in the middle position between the splint 16 and the fixed seat 12, and then releasing the limiting plate 4. Under the elastic action of the reset spring 15, the splint 16 is reset to fix the needle tube 5 in the middle position between the fixed seat 12 and the splint 16.

[0032] In some examples, the splint 16 and the fixing seat 12 are both configured to be in an arc shape. By configuring the splint 16 and the fixing seat 12 to be in an arc shape, it is helpful to increase the contact area between the splint 16, the fixing seat 12 and the needle tube 5, and increase the connection stability with the needle tube 5.

[0033] In some examples, an observation hole 6 is provided on the outer side of the barrel 3 away from the through hole 14. The observation hole 6 allows the nurse to observe the volume of the physiological saline solution inside the needle tube 5, thereby facilitating the tube sealing operation.

[0034] By adopting the above technical solution:

[0035] Use the needle tube 5 to extract physiological saline, connect the scalp needle and then insert it into the cylinder 3, so that the top end of the piston push rod 10 is embedded in the groove 18, and the limit plate 4 is loosened. Under the elastic action of the reset spring 15, the splint 16 is driven to reset, and the needle tube 5 is fixed in the middle position between the fixing seat 12 and the splint 16. The sleeve 2 is rotated to drive the circular plate 17 to rotate. Through the connection between the screw hole 7 and the screw 1, the pressure plate 13 is driven to descend, and then the negative pressure piston 11 is pushed forward to push the sealing liquid out. The sealing operation is completed by operating the rotating sleeve 2, which reduces the operating intensity of the thenar muscle of the nurse's hand and relieves the muscle soreness of the nurse's hand.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A central venous catheter sealing device, characterized in that: include: A cylinder (3), the left end of the cylinder (3) is rotatably connected to a sleeve (2), the interior of the sleeve (2) is connected to a circular plate (17), the interior of the circular plate (17) is threadedly connected to a screw (1), and the end of the screw (1) is connected to a pressing plate (13); A through hole (14) is provided on the outer side of the cylinder (3), a limiting mechanism is provided inside the through hole (14), one end of the limiting mechanism is connected to a clamping plate (16), the inner wall of the cylinder (3) and a position corresponding to the through hole (14) are connected to a fixing seat (12), the inner walls of the fixing seat (12) and the clamping plate (16) are both connected to a needle tube (5), the inside of the needle tube (5) is connected to a negative pressure piston (11), and the back side of the negative pressure piston (11) is connected to a piston push rod (10).

2. A central venous catheter sealing device according to claim 1, characterized in that: A clamping groove (18) is provided on the outer side of the pressure plate (13), and the piston push rod (10) is embedded in the inside of the clamping groove (18).

3. A central venous catheter sealing device according to claim 1, characterized in that: A slide groove (8) is provided at the left end of the cylinder (3), a slider (9) is rotatably connected inside the slide groove (8), and the slider (9) is fixedly connected to the sleeve (2).

4. A central venous catheter sealing device according to claim 1, characterized in that: A screw hole (7) is provided in the middle of the circular plate (17), and the screw hole (7) is threadedly connected to the screw rod (1).

5. A central venous catheter sealing device according to claim 1, characterized in that: The limiting mechanism comprises a connecting rod (19) connected to the inside of the through hole (14), one end of the connecting rod (19) is connected to the limiting plate (4), the other end of the connecting rod (19) is fixedly connected to the clamping plate (16), a return spring (15) is sleeved on the outer side of the connecting rod (19), one end of the return spring (15) is fixedly connected to the cylinder (3), and the other end of the return spring (15) is fixedly connected to the clamping plate (16).

6. A central venous catheter sealing device according to claim 1, characterized in that: The clamping plate (16) and the fixing seat (12) are both arranged in an arc shape.

7. A central venous catheter sealing device according to claim 1, characterized in that: An observation hole (6) is provided on the outer side of the cylinder (3) at a position away from the through hole (14).

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