Direct penetration type drainage catheter device capable of accurately positioning and avoiding puncture injury

Abstract

The utility model discloses a straight-through type drainage catheter device capable of accurately positioning and avoiding puncture injury, which comprises a drainage catheter, a hollow puncture needle, a hollow tube sleeve and an injector, the drainage catheter comprises a tip, a catheter body and a catheter seat, the hollow puncture needle comprises a needle tip, a needle tube and a needle seat, and the hollow tube sleeve comprises a tube sleeve body and a tube sleeve seat; the hollow puncture needle is embedded in the hollow tube sleeve, the hollow tube sleeve is embedded in the drainage catheter, the needle tip penetrates through the tip end, and the injector is connected with the needle base; according to the utility model, the pipe sleeve seat is provided with the limiting part, after the indwelling catheter enters a human body, the needle seat of the hollow puncture needle is rotated backwards to the limiting part, and the hollow puncture needle retreats into the hollow pipe sleeve, so that when a doctor draws an injector, the injury of the needle point to the human body after the drainage catheter enters the human body can be avoided, and the hollow puncture needle is not completely withdrawn; and a channel is not formed between the chest and the outside to cause pneumothorax.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical drainage catheter, in particular to a straight insertion type drainage catheter device capable of precise positioning and avoiding puncture injury. BACKGROUND

[0002] Pleural and abdominal effusion is a common clinical condition. It is more common in people over 40 years old, and the clinical features are high fever, cough and a large amount of foul-smelling sputum. Due to long-term chronic poisoning and consumption, many patients appear emaciation and anemia. Individual brain, liver and kidney metastatic abscesses. It is a common complication of patients with pulmonary tuberculosis, primary malignant tumor, metastatic malignant tumor and internal organ injury. Effective control of pleural and abdominal effusion is of great significance to relieve clinical symptoms, alleviate the suffering of patients, improve the quality of life and save and prolong life. At present, the main method for treating lung abscess and acute pyothorax is to remove or drain the pus in the pus cavity after X-ray or CT examination. At this time, puncture drainage is needed to discharge the patient's pus and blood infection outside the body.

[0003] The known chest and abdominal cavity straight insertion type puncture tube requires materials composed of a drainage catheter, a puncture needle and a sleeve. It is a puncture needle tube. However, because the chest cavity cannot have external gas entering, the puncture needle is a solid needle, and during the tube placement process, the doctor needs to adjust the cooperation between the three, otherwise the needle tip is easy to damage the internal organs or cause pneumothorax. During the puncture process, it is not possible to accurately know whether the puncture is in place, unless B-ultrasound is used, which requires the increase of equipment personnel and the increase of operation time, so in the actual clinical situation, it is mostly relied on the doctor's clinical experience, which requires high skill of the doctor; at the same time, during the tube placement process, the puncture needle and the sleeve are easy to retreat, resulting in the need for greater pushing force for tube placement; finally, the doctor extracts the liquid at the lesion for testing, which also needs to wait until after the tube placement, and then withdraws the puncture needle and the sleeve to use a syringe or other collection device to perform liquid extraction. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model hopes to provide a straight insertion type drainage catheter device capable of precise positioning and avoiding puncture injury, which can accurately position whether the puncture is in place during tube placement without the need for other equipment assistance.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] The utility model provides a straight insertion type drainage catheter device capable of precise positioning and avoiding puncture injury, which comprises a drainage catheter, a hollow puncture needle, a hollow tube sleeve and a syringe.

[0007] The drainage catheter comprises a tip, a tube body and a catheter seat, the catheter seat is an inner luer joint, and a limiting locking thread is further arranged on the catheter seat.

[0008] The hollow puncture needle comprises a needle tip, a needle tube and a needle base, one end of the needle base is an outer luer joint with an internal thread outside, the other end is an inner luer joint with an external thread outside;

[0009] The hollow tube sleeve comprises a sleeve body and a sleeve base, the inner diameter of the sleeve body is larger than the outer diameter of the needle tube, one end of the sleeve base is an outer luer joint with an internal thread outside, the other end is an inner luer joint with a limit outside;

[0010] The hollow puncture needle top extends from the sleeve base, the hollow puncture needle is embedded in the hollow tube sleeve, the needle base is rotationally locked with the sleeve base, and the needle tip extends from the top of the hollow tube sleeve; the top of the hollow tube sleeve extends from the catheter base, the hollow tube sleeve is embedded in the drainage catheter, the sleeve base is rotationally locked with the catheter base, the needle tip penetrates the tip, and the syringe is connected with the needle base.

[0011] Further, the needle tube and the sleeve body are both hollow stainless steel round tubes.

[0012] Further, the tip is internally provided with a plane which collides with the hollow tube sleeve, when the sleeve base is rotationally locked with the catheter base to the limit locking thread, the top of the hollow tube sleeve abuts against the plane.

[0013] Further, the drainage catheter is further provided with a drainage catheter connector.

[0014] The utility model has the advantages that:

[0015] (1) The utility model discloses a limit position on the sleeve base, when a doctor holds the drainage catheter device to puncture a patient, after the catheterization enters the human body, the needle base of the hollow puncture needle is rotated to the limit position, and the hollow puncture needle retreats into the hollow tube sleeve, at this time, the doctor can pull the syringe, the damage of the needle tip to the human body after the drainage catheter enters the human body is avoided, and the hollow puncture needle does not completely withdraw, so that the thoracic cavity and the outside do not form a channel to cause pneumothorax.

[0016] (2) The catheter base, the sleeve base and the needle base are rotationally locked, the hollow puncture needle and the hollow tube sleeve do not retreat during catheterization, and the catheterization is more labor-saving.

[0017] (3) The hollow puncture needle is designed to be hollow and is used in linkage with the syringe, accurate positioning whether puncturing is in place during catheterization is realized, and other devices are not needed to assist.

[0018] (4) In the use process, the catheterization time is reduced, the requirement of the clinical experience of the doctor is reduced, the possibility of internal organ damage during puncture is eliminated, the doctor is facilitated, and the comfort of the patient is improved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the drainage catheter structure according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the hollow puncture needle structure in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the hollow tube sleeve structure in an embodiment of this utility model;

[0023] Figure 5 This is a cross-sectional view of the overall structure of an embodiment of the present utility model;

[0024] Figure 6 This is a sectional view of the hollow puncture needle of this utility model after retraction.

[0025] Among them: 1-drainage catheter, 2-hollow puncture needle, 3-hollow cannula, 4-syringe, 101-catheter seat, 102-tip, 103-cannula body, 104-limiting locking thread, 105-drainage catheter connector, 201-needle seat, 202-needle tip, 203-needle tube, 301-cannula seat, 302-cannula body, 303-limiting, 5-plane. Detailed Implementation

[0026] To provide a more detailed understanding of the features and technical content of this utility model, the implementation of this utility model will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit this utility model.

[0027] like Figures 1-6 As shown, this utility model embodiment provides a direct-penetration drainage catheter device that can accurately position and avoid puncture damage, including a drainage catheter 1, a hollow puncture needle 2, a hollow tube sleeve 3, and a syringe 4;

[0028] The drainage catheter 1 includes a tip 102, a tube body 103 and a catheter seat 101. The catheter seat 101 is an inner Luer connector. The catheter seat 101 is also provided with a limiting locking thread 104. The tip 102 has a plane 5 inside that collides with the hollow tube sleeve 3.

[0029] The distance of the limiting locking thread 104 should ensure that after locking, the hollow sleeve 3 can collide with the plane 5 inside the tip 102. The drainage catheter 1 is also provided with a drainage catheter connector 105, which is convenient to hold during puncture and insertion and convenient to fix to the body surface during indwelling.

[0030] The hollow puncture needle 2 includes a needle tip 202, a needle tube 203, and a needle seat 201. One end of the needle seat 201 is an external Luer connector with an internal thread, and the other end is an internal Luer connector with an external thread. The needle tube 203 is a hollow stainless steel round tube.

[0031] The hollow tube sleeve 3 includes a tube body 302 and a tube seat 301. The inner diameter of the tube body 302 is larger than the outer diameter of the needle tube 203. One end of the tube seat 301 is an external Luer connector with an internal thread, and the other end is an internal Luer connector with a limit 303. The tube body 302 is a hollow stainless steel round tube.

[0032] The top of the hollow puncture needle 2 extends into the tube sleeve seat 301, and the hollow puncture needle 2 is embedded inside the hollow tube sleeve 3. The needle seat 201 is rotated and locked with the tube sleeve seat 301, and the needle tip 202 extends out from the top of the hollow tube sleeve 3. The top of the hollow tube sleeve 3 extends into the catheter seat 101, and the hollow tube sleeve 3 is embedded inside the drainage catheter 1. The tube sleeve seat 301 is rotated and locked with the catheter seat 101, and the top of the hollow tube sleeve 3 abuts against the plane 5. The needle tip 202 passes through the tip 102, and the syringe 4 is connected to the needle seat 201.

[0033] The specific usage process of this utility model embodiment is as follows: First, tighten the hollow puncture needle 2 and the hollow cannula 3. Then, tighten the tightened components and the drainage catheter 1. Finally, tightly connect the syringe 4 to the needle seat 201 of the hollow puncture needle. The doctor holds the drainage catheter device to perform puncture and catheter placement on the patient. After the catheter is inserted into the human body, rotate the needle seat 201 of the hollow puncture needle to the limit 303. Pay attention to maintaining a tight connection between the syringe and the needle seat 201 of the hollow puncture needle. Continue to slowly push the drainage catheter device into the human body while the doctor pulls the syringe 4 with his right hand until the syringe 4 draws out the accumulated fluid. Stop the catheter placement. Rotate the cannula seat 301 to remove the hollow puncture needle 2, the hollow cannula 3, and the syringe 4 to complete the catheter placement.

[0034] This invention provides a limiting point 303 on the tube sleeve seat 301. When a doctor holds the drainage catheter device to perform puncture and catheter insertion on a patient, after the catheter is inserted into the human body, the needle seat 201 of the hollow puncture needle 2 is rotated backward to the limiting point 303, and the hollow puncture needle 2 is retracted into the hollow tube sleeve 3. At this time, the doctor is withdrawing the syringe 4. This can avoid damage to the human body by the needle tip 202 after the drainage catheter 1 enters the human body. In addition, the hollow puncture needle 2 is not completely withdrawn, so as not to form a channel between the chest cavity and the outside, causing pneumothorax.

[0035] This invention, through the tightening of the catheter seat 101, the tube sleeve seat 301 and the needle seat 201, ensures that the hollow puncture needle 2 and the hollow tube sleeve 3 will not retract during the insertion process, making the insertion more effortless. Through the hollow design of the hollow puncture needle 2, it can be used in conjunction with the syringe 4 to accurately locate whether the puncture is in place during the insertion process, without the need for other equipment to assist.

[0036] This invention reduces the catheterization time and lowers the clinical experience requirements for doctors, eliminating the possibility of internal organ damage during puncture, thus making it more convenient for doctors and improving patient comfort.

[0037] Here, the specific models of the devices mentioned above are not limited or described in detail, and the in-depth connection methods of the devices mentioned above are not described in detail, as they are common knowledge and can be understood by those skilled in the art.

[0038] This utility model embodiment is merely an illustration of its specific implementation and is not intended to limit its scope of protection. Those skilled in the art can make certain modifications based on this embodiment; therefore, all equivalent changes or modifications made in accordance with the scope of this utility model patent claim fall within the scope of this utility model patent claim.

Claims

1. A direct-penetration drainage catheter device capable of precise positioning and avoiding puncture damage, characterized in that, Includes drainage catheter, hollow puncture needle, hollow cannula, and syringe; The drainage catheter includes a tip, a body, and a catheter seat. The catheter seat is an inner Luer connector and is also provided with a limiting locking thread. The hollow puncture needle includes a needle tip, a needle tube, and a needle hub. One end of the needle hub is an external Luer connector with an internal thread, and the other end is an internal Luer connector with an external thread. The hollow tube sleeve includes a tube sleeve body and a tube sleeve seat. The inner diameter of the tube sleeve body is larger than the outer diameter of the needle tube. One end of the tube sleeve seat is an external Luer connector with an internal thread on the outside, and the other end is an internal Luer connector with a limit on the outside. The top of the hollow puncture needle extends into the cannula seat, and the hollow puncture needle is embedded inside the hollow cannula. The needle seat and the cannula seat are rotated and locked together, and the needle tip extends out from the top of the hollow cannula. The top of the hollow cannula extends into the catheter seat, and the hollow cannula is embedded inside the drainage catheter. The cannula seat and the catheter seat are rotated and locked together, and the needle tip passes through the tip. The syringe is connected to the needle seat.

2. The direct-penetration drainage catheter device according to claim 1, characterized in that, Both the needle tube and the cannula are hollow stainless steel round tubes.

3. The direct-penetration drainage catheter device according to claim 2, characterized in that, The tip has a flat surface inside that collides with the hollow tube sleeve. When the tube sleeve seat and the guide tube seat are rotated and locked, the top of the hollow tube sleeve abuts against the flat surface.

4. The direct-penetration drainage catheter device according to claim 3, characterized in that, The drainage tube is also equipped with a drainage tube connector.

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