Puncture set for local anesthesia
By using an anesthesia catheter and injection head made of polyurethane material, combined with a flexible rubber sleeve and threaded connection mechanism, the problem of damage during epidural anesthesia catheter insertion has been solved, achieving uniform drug diffusion and efficient infusion, and improving the safety and reliability of anesthesia operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU MAICHUANG MEDICAL MACHINE LTD
- Filing Date
- 2025-03-04
- Publication Date
- 2026-07-21
AI Technical Summary
Existing epidural catheters lack flexibility when inserted into the epidural space, which may cause damage to blood vessels, nerves and other tissues, affecting the safety and effectiveness of the anesthesia procedure.
The anesthesia catheter and injection head are made of polyurethane, combined with a flexible rubber sleeve and threaded connection mechanism. The rounded corner structure reduces the risk of injury, and multiple side-outlet holes ensure uniform drug diffusion, thus ensuring the safety and efficiency of drug infusion.
It effectively reduces the risk of damage to blood vessels, nerves and other tissues, improves the uniformity of drug diffusion and the injection flow rate, and ensures the safety and reliability of anesthesia procedures.
Smart Images
Figure CN224523198U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surgical anesthesia technology, specifically to a puncture kit for local anesthesia. Background Technology
[0002] Surgical anesthesia refers to a medical procedure in which a patient temporarily loses consciousness or pain sensation during a surgical operation by using drugs or other techniques, in order to ensure the safe and smooth conduct of the surgery. This is the most basic purpose of surgical anesthesia. Surgical operations can cause varying degrees of damage to human tissues, which can stimulate nerve endings to produce pain signals. Anesthetic drugs can block the transmission of pain signals or alter the brain's perception of pain, so that the patient does not feel pain during the surgery.
[0003] In clinical practice of epidural anesthesia, continuous drug administration is usually performed using anesthesia puncture kits. Currently, most epidural catheters in commercially available anesthesia puncture kits have certain defects. When these catheters are inserted into the epidural space, their injection tips are often quite rigid. In actual operation, this rigid injection tip may cause damage to blood vessels, nerves, and other tissues due to insufficient flexibility when in contact with surrounding tissues. For example, it may accidentally puncture blood vessels and cause bleeding, or damage nerves, leading to adverse consequences such as local sensory abnormalities or motor dysfunction after surgery, thus affecting the safety and effectiveness of the anesthesia operation and greatly reducing its practicality in actual use scenarios. In view of this, in order to effectively solve the above problems, a local anesthesia puncture kit has been developed and launched to improve the safety and reliability of anesthesia operations and better meet clinical needs. Utility Model Content
[0004] The present invention mainly addresses the technical problems existing in the prior art by providing a puncture kit for local anesthesia.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a puncture kit for local anesthesia, comprising a drug delivery mechanism and a drug infusion connection mechanism. The drug delivery mechanism includes an anesthesia catheter made of polyurethane. One end of the anesthesia catheter is fixedly connected to an injection head. A side-outlet hole is formed through the surface of the injection head. A first rubber sleeve is provided on the outside of the anesthesia catheter. A plug is fixedly connected to the outside of the first rubber sleeve. One end of the injection head is rounded to prevent sharp edges.
[0006] Preferably, the first rubber sleeve is slidably connected to the anesthesia catheter, and three side drug outlets are provided. One end of the injection head is provided with a direct current drug outlet, and the drug is dispensed simultaneously through the three side drug outlets.
[0007] Preferably, the injection head is made of polyurethane. The first rubber sleeve and the plug are both located on the outside of one end of the anesthesia catheter. After the epidural needle is inserted into the epidural space, the plug can be slid to block the gap at the outer end of the epidural needle.
[0008] Preferably, the drug delivery connection mechanism includes a second rubber sleeve, a connecting tube fixedly connected to the outside of the second rubber sleeve, a threaded tube fixedly connected to the upper side of the connecting tube, a threaded cylinder provided outside the threaded cylinder, and a rubber tube fixedly connected to the upper side of the threaded cylinder. The second rubber sleeve has the same shape as the first rubber sleeve, and the needle for loading anesthetic drugs can be inserted into the rubber tube.
[0009] Preferably, the second rubber sleeve is slidably connected to the anesthesia catheter, and the threaded cylinder is threadedly connected to the threaded pipe. After the anesthesia catheter is slid into the second rubber sleeve, one end of the anesthesia catheter is connected to the connecting pipe.
[0010] Preferably, the second rubber sleeve is disposed outside one end of the anesthesia catheter. The rubber tube is connected to the anesthesia catheter. When the anesthetic solution is poured into the syringe, one end of the syringe is inserted into the rubber tube. The syringe can push the anesthetic into the anesthesia catheter.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This utility model, through the setting of the drug delivery mechanism, inserts the anesthesia catheter into the epidural space through the epidural needle. Since the anesthesia catheter is made of polyurethane, it has good flexibility and can effectively reduce the risk of damage to blood vessels, nerves and other tissues. The drug injection head fixedly connected to one end of the anesthesia catheter is also made of polyurethane, and one end of the drug injection head is rounded to further reduce the possibility of tissue damage. The surface of the drug injection head has three side drug outlet holes, through which the anesthetic drug can flow out simultaneously, so that the drug can diffuse more evenly in the epidural space and increase the drug injection flow rate.
[0013] 2. This utility model, through the setting of the drug infusion connection mechanism, when drug infusion is required, first slide the second rubber sleeve into the anesthesia catheter, so that one end of the anesthesia catheter is connected to the connecting tube. By rotating the threaded cylinder and threaded tube, the needle tube and the connecting tube are threadedly connected, so that the connection is tight. At this time, the rubber tube is connected to the anesthesia catheter. Then, the needle tube filled with anesthetic is inserted into the rubber tube. The rubber tube and the anesthesia catheter can be disassembled at any time, so that rubber tubes of different diameters and needle tube heads can be replaced. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a frontal view of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the first frontal cross-section of the present invention;
[0017] Figure 3 This is a schematic diagram of the second frontal cross-section of the present invention.
[0018] In the diagram: 1. Anesthesia catheter; 2. Injection head; 3. Side outlet; 4. First rubber sleeve; 5. Plug; 6. Second rubber sleeve; 7. Connecting tube; 8. Threaded tube; 9. Threaded cylinder; 10. Rubber tube. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-3 A local anesthesia puncture kit includes a drug delivery mechanism and a drug infusion connection mechanism. The drug delivery mechanism includes an anesthesia catheter 1, which is made of polyurethane. One end of the anesthesia catheter 1 is fixedly connected to an injection head 2. The injection head 2 has a side outlet hole 3 through its surface. A first rubber sleeve 4 is provided on the outside of the anesthesia catheter 1, and a plug 5 is fixedly connected to the outside of the first rubber sleeve 4. The first rubber sleeve 4 is slidably connected to the anesthesia catheter 1. There are three side outlet holes 3. The injection head 2 is made of polyurethane. The first rubber sleeve 4 and the plug 5 are both located on the outside of one end of the anesthesia catheter 1. First, when performing epidural anesthesia, the anesthesia... The catheter 1 is inserted into the epidural space through an epidural needle. Because the anesthesia catheter 1 is made of polyurethane, it has good flexibility, which can effectively reduce the risk of damage to blood vessels, nerves and other tissues. The injection head 2, which is fixedly connected to one end of the anesthesia catheter 1, is also made of polyurethane, and one end of the injection head 2 is rounded, without any sharp parts, further reducing the possibility of tissue damage. The injection head 2 has three side drug outlet holes 3 on its surface, and one end of the injection head 2 also has a direct flow outlet. In this way, during drug injection, the anesthetic can flow out through these drug outlet holes at the same time, so that the drug can diffuse more evenly in the epidural space and increase the injection flow rate.
[0021] In one aspect of this embodiment, after the epidural needle is inserted into the epidural space, the first rubber sleeve 4 and the plug 5 can be slid along the anesthesia catheter 1. The plug 5 is used to block the gap at the outer end of the epidural needle to prevent the anesthetic from leaking from the gap between the epidural needle and the anesthesia catheter 1, ensuring that the anesthetic can be accurately injected into the target epidural space. When it is necessary to perform the infusion operation, the second rubber sleeve 6 is first slid into the anesthesia catheter 1, so that one end of the anesthesia catheter 1 is connected to the connecting tube 7. The threaded cylinder 9 is rotated to connect with the threaded tube 8, so that the needle tube and the connecting tube 7 are tightly connected. At this time, the rubber tube 10 is connected to the anesthesia catheter 1. Then, the needle tube filled with anesthetic is inserted into the rubber tube 10. When the needle tube is pushed to push the drug, the anesthetic can be smoothly pushed into the anesthesia catheter 1, and then injected into the epidural space through the drug outlet of the injection head 2, thereby realizing the infusion of anesthetic drugs to the patient, thereby achieving the effect of local anesthesia and ensuring the smooth progress of surgical and other medical operations.
[0022] The working principle of this utility model is as follows: When using this local anesthesia puncture kit, after the epidural needle is inserted into the epidural space, the first rubber sleeve 4 and the second rubber sleeve 6 are slid out from the anesthesia catheter 1, causing the directly connected parts of the first rubber sleeve 4 and the second rubber sleeve 6 to detach from the anesthesia catheter 1. Then, the anesthesia catheter 1 is passed through the hollow part of the epidural needle and introduced into the epidural space. Next, the first rubber sleeve 4 and the second rubber sleeve 6 are slid back onto the anesthesia catheter 1, and the plug 5 is used to block the outer end gap of the epidural needle. The second rubber sleeve 6 slides into the anesthesia catheter 1, connecting one end of the anesthesia catheter 1 to the connecting tube 7. The threaded sleeve 9 is then connected to the threaded tube 8 by rotating the threaded sleeve, making the needle tube and the connecting tube 7 tightly connected. At this time, the rubber tube 10 is connected to the anesthesia catheter 1. Then, the needle tube filled with anesthetic is inserted into the rubber tube 10. When the needle tube is pushed to push the drug, the anesthetic can be smoothly pushed into the anesthesia catheter 1, and then injected into the epidural space through the drug outlet of the injection head 2, thereby realizing the infusion of anesthetic drugs to the patient and achieving the effect of local anesthesia.
[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A puncture kit for local anesthesia, comprising a drug delivery mechanism and a drug infusion connection mechanism, characterized in that: The drug delivery mechanism includes an anesthesia catheter (1), which is made of polyurethane. One end of the anesthesia catheter (1) is fixedly connected to a drug injection head (2). A side drug outlet hole (3) is opened through the surface of the drug injection head (2). A first rubber sleeve (4) is provided on the outside of the anesthesia catheter (1), and a plug (5) is fixedly connected to the outside of the first rubber sleeve (4).
2. The puncture kit for local anesthesia according to claim 1, characterized in that: The first rubber sleeve (4) is slidably connected to the anesthesia catheter (1), and the side outlet (3) has three openings.
3. The puncture kit for local anesthesia according to claim 1, characterized in that: The injection head (2) is made of polyurethane, and the first rubber sleeve (4) and the plug (5) are both located on the outside of one end of the anesthesia catheter (1).
4. The puncture kit for local anesthesia according to claim 1, characterized in that: The drug delivery connection mechanism includes a second rubber sleeve (6), a connecting pipe (7) is fixedly connected to the outside of the second rubber sleeve (6), a threaded pipe (8) is fixedly connected to the upper side of the connecting pipe (7), a threaded cylinder (9) is provided on the outside of the threaded pipe (8), and a rubber tube (10) is fixedly connected to the upper side of the threaded cylinder (9).
5. The puncture kit for local anesthesia according to claim 4, characterized in that: The second rubber sleeve (6) is slidably connected to the anesthesia catheter (1), and the threaded cylinder (9) is threadedly connected to the threaded tube (8).
6. The puncture kit for local anesthesia according to claim 4, characterized in that: The second rubber sleeve (6) is placed outside one end of the anesthesia catheter (1), and the rubber tube (10) is connected to the anesthesia catheter (1).