Adhesive sheath assembly with hemostatic valve

Abstract

This utility model discloses a tearable sheath catheter assembly with a hemostatic valve, relating to the field of tearable sheath catheter technology. The utility model includes a puncture needle with a needle hub mounted on it, a guide wire installed inside the needle, a needle tip mounted at one end of the needle hub away from the puncture needle, and a syringe fixedly mounted at the other end of the needle tip. The reliable hemostatic function of the hemostatic valve allows doctors to focus more on the interventional procedure, improving the accuracy and efficiency of the surgery. The convenient removal of the tearable sheath shortens the operation time and reduces patient discomfort. Through a specially designed fixation structure, such as Velcro, the catheter sheath can be tightly and stably fixed to the patient's clavicle.

Description

Technical Field

[0001] This utility model relates to the field of tearable sheath catheter technology, and in particular to a tearable sheath catheter assembly with a hemostatic valve. Background Technology

[0002] Tearable sheath catheter assemblies with hemostatic valves play a crucial role in modern interventional medicine. The hemostatic valve effectively prevents blood leakage from the puncture site, creating a safe environment for surgical procedures. The tearable sheath design facilitates easy removal after use, reducing damage to patient tissues. In procedures such as peripheral vascular interventions and cardiac interventions, these catheter sheath assemblies provide vital pathways for delivering various instruments, collecting samples, or injecting drugs. However, in practice, after insertion into a blood vessel, the catheter sheath is prone to displacement due to patient movement and surgical manipulation. This can not only affect the precise operation of subsequent instruments but also increase the likelihood of complications such as bleeding and infection, adversely impacting the success of the procedure and the patient's prognosis.

[0003] Therefore, a new tearable sheath catheter assembly with a hemostatic valve is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a tearable sheath catheter assembly with a hemostatic valve to solve the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a tearable sheath catheter assembly with a hemostatic valve, including a puncture needle, a needle hub installed on the puncture needle, a guide wire installed inside the puncture needle, a needle tip installed at one end of the needle hub away from the puncture needle, and a syringe fixedly installed at the other end of the needle tip; The guide sheath has an expander installed inside it. The length of the expander is greater than the length of the guide sheath. A first threaded groove is formed at one end of the inner sidewall of the guide sheath. A rotating column is installed on the guide sheath. A hemostatic valve is installed at the end of the rotating column away from the guide sheath. A second threaded groove is formed on the outer sidewall of the rotating column. The first threaded groove and the second threaded groove are engaged.

[0006] Preferably, a connecting pipe is installed at one end of the guide sheath, and a three-way valve is installed on the connecting pipe.

[0007] Preferably, the guide wire is J-shaped at the end away from the needle tip.

[0008] Preferably, the outer diameter of the needle is equal to the diameter of the inner wall of the needle hub.

[0009] Preferably, two force-applying rods are symmetrically installed on the guide sheath, and each of the force-applying rods has multiple resistance grooves.

[0010] Preferably, the guide sheath is equipped with two symmetrical mounting plates, each mounting plate having a connecting groove, each connecting groove having a fixing strap, each fixing strap having a female adhesive strip, and each fixing strap having a female adhesive strip at its other end.

[0011] Compared with existing technologies, the advantages of this utility model are: This tear-off catheter sheath assembly with a hemostatic valve allows surgeons to focus more on the interventional procedure, improving accuracy and efficiency. The tear-off sheath facilitates easy removal, shortening surgery time and reducing patient discomfort. A specially designed fixation structure with Velcro straps securely and stably anchors the catheter sheath to the patient's clavicle. This fixation method is not only strong and reliable, effectively resisting external forces and preventing sheath displacement to ensure smooth surgical procedures, but also offers excellent comfort and adaptability. The fixation straps are made of soft, breathable material, causing no pressure or discomfort to the patient's skin, and can be flexibly adjusted according to the specific condition of the clavicle, making it suitable for patients of different ages and clavicle shapes. Furthermore, its simple and quick operation greatly improves the efficiency of medical staff and provides more reliable support for patient treatment.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a structural diagram showing the installation configuration of this utility model; Figure 2 This is a structural diagram of the puncture needle of this utility model; Figure 3 This is a structural diagram of the needle and syringe of this utility model; Figure 4 This is a structural diagram of the guide sheath of this utility model; Figure 5 This is a structural diagram of the force-applying rod of this utility model; Figure 6 This is a structural diagram of the fixing strap of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 110. Puncture needle; 120. Needle hub; 130. Guide wire; 140. Needle tip; 150. Syringe; 210. Guide sheath; 220. Connecting tube; 230. Three-way valve; 240. Rotating column; 250. Hemostatic valve; 260. Diverter; 270. Force rod; 280. Resistance groove; 310. Mounting plate; 320. Connecting groove; 330. Fixing strap; 340. Female adhesive tape; 350. Female adhesive tape. Detailed Implementation

[0016] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0017] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of the tearable sheath catheter assembly with hemostatic valve.

[0020] Example 1: Please refer to Figure 1-5As shown, this embodiment includes a puncture needle 110, a needle hub 120 mounted on the puncture needle 110, a guide wire 130 installed inside the puncture needle 110, a needle tip 140 mounted at one end of the needle hub 120 away from the puncture needle 110, and a syringe 150 fixedly mounted at the other end of the needle tip 140; and a guide sheath 210, which is made of polyethylene (PE). This material has good flexibility and chemical stability, is wear-resistant, and is easy to process and mold. The tearable guide sheath 210 made of polyethylene can achieve relatively smooth tearing while ensuring a certain strength, and is less likely to break or leave material residue during the tearing process. An expander 260 is installed inside the guide sheath 210, and the length of the expander 260 is greater than the length of the guide sheath 210. A first threaded groove is formed at one end of the inner sidewall of the guide sheath 210. A rotating column 240 is installed on the guide sheath 210, and a hemostatic valve 25 is installed at the end of the rotating column 240 away from the guide sheath 210. 0. A second threaded groove is provided on the outer wall of the rotating column 240, and the first threaded groove is engaged with the second threaded groove; a connecting pipe 220 is installed at one end of the guide sheath tube 210, and a three-way valve 230 is installed on the connecting pipe 220; the guide wire 130 is J-shaped at the end away from the needle 140; the outer diameter of the needle 140 is equal to the inner wall diameter of the needle seat 120; two force rods 270 are symmetrically installed on the guide sheath tube 210, and multiple resistance grooves 280 are provided on each of the force rods 270.

[0021] In use, first flush all components of the catheter sheath assembly with heparinized saline. Then connect a disposable syringe 150 filled with heparinized saline to the puncture needle 110, accurately locate the blood vessel to be punctured, and puncture the blood vessel with the puncture needle 110. When blood return is observed, inject heparinized saline through the puncture needle 110 using the disposable syringe 150. Remove the disposable syringe 150, then retract the J-shaped tip of the guidewire 130 into the needle hub 120. Hold the puncture needle 110 hub and push the guidewire 130 to the expected position. Then, hold the guidewire 130 in the appropriate position, withdraw the puncture needle 110, and then... The dilator 260 is inserted into the guide sheath 210. The dilator 260 / guide sheath 210 is rotated along the guide wire 130 into the expected location in the blood vessel. The guide sheath 210 is held, the dilator 260 is rotated, and the guide wire 130 and dilator 260 are slowly withdrawn to prevent air from entering. The guide sheath 210 is kept in place. Then, the three-way valve 230 on one side of the guide sheath 210 is aspirated to allow blood to flow back and expel all the air from the guide sheath 210. The electrode lead or catheter is then pushed through the guide sheath 210 to the expected position. The force bar 270 is grasped, and the guide sheath 210 is torn in half while being torn and withdrawn from the body.

[0022] Example 2: Please refer to Figure 6As shown, this embodiment includes two symmetrical mounting plates 310 installed on the guide sheath tube 210. Each mounting plate 310 has a connecting groove 320, and each connecting groove 320 has a fixing strap 330 installed in it. Each fixing strap 330 has a female adhesive patch 340 installed on it, and each fixing strap 330 has a female adhesive patch 350 installed at the other end. The fixing strap 330 is made of soft silicone or cloth and has a certain degree of elasticity. It fits the skin of the clavicle and will not cause excessive pressure on the patient's clavicle area.

[0023] Once the guide sheath 210 is positioned on the blood vessel, the two fixation straps 330 are passed directly through the connecting grooves 320 in the corresponding mounting plate 310. Then, the fixation straps 330 are wrapped around the patient's armpit and shoulder, and the female adhesive tape 340 and the female adhesive tape 350 are attached together to fix the guide sheath 210 to the clavicle.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A tearable sheath catheter assembly with a hemostatic valve, characterized in that, include: A puncture needle (110) is provided with a needle hub (120) and a guide wire (130) is installed inside the puncture needle (110). A needle tip (140) is installed at one end of the needle hub (120) away from the puncture needle (110), and a syringe (150) is fixedly installed at the other end of the needle tip (140). A guide sheath (210) is provided, and an expander (260) is installed inside the guide sheath (210). The length of the expander (260) is greater than the length of the guide sheath (210). A first threaded groove is provided at one end of the inner sidewall of the guide sheath (210). A rotating column (240) is installed on the guide sheath (210). A hemostatic valve (250) is installed at the end of the rotating column (240) away from the guide sheath (210). A second threaded groove is provided on the outer sidewall of the rotating column (240). The first threaded groove and the second threaded groove are engaged.

2. The tearable sheath catheter assembly with hemostatic valve according to claim 1, characterized in that, A connecting pipe (220) is installed at one end of the guide sheath (210), and a three-way valve (230) is installed on the connecting pipe (220).

3. The tearable sheath catheter assembly with hemostatic valve according to claim 1, characterized in that, The guide wire (130) is J-shaped at one end away from the needle (140).

4. The tearable sheath catheter assembly with hemostatic valve according to claim 1, characterized in that, The outer diameter of the needle (140) is equal to the inner wall diameter of the needle seat (120).

5. The tearable sheath catheter assembly with hemostatic valve according to claim 1, characterized in that, Two force-applying rods (270) are symmetrically installed on the guide sheath (210), and each of the force-applying rods (270) is provided with multiple resistance grooves (280).

6. The tearable sheath catheter assembly with hemostatic valve according to claim 1, characterized in that, The guide sheath (210) is equipped with two symmetrical mounting plates (310). Each mounting plate (310) has a connecting groove (320). Each connecting groove (320) has a fixing strap (330). Each fixing strap (330) has a sub-attachment (340). Each fixing strap (330) has a female attachment (350) at the other end.

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