Developing venous indwelling needle
By setting a contrast tank and a contrast medium on the indwelling body of the intravenous catheter, the problem of insufficient contrast in traditional intravenous catheters is solved, enabling precise positioning under imaging equipment and reducing patient suffering and medical risks.
Patent Information
- Application Number
- CN202422901557.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional indwelling intravenous catheters lack imaging capabilities, leading to inaccurate vascular puncture, increasing patient pain and the risk of injury. Furthermore, broken needle cores are difficult to locate under imaging equipment, potentially causing medical accidents.
A contrast-enhancing section, including a contrast tank and a contrast-enhancing body, is provided on the indwelling needle body to observe the position and shape of the indwelling needle in the blood vessel using imaging equipment, preventing it from breaking and entering the blood vessel.
It improves the accuracy of puncture, reduces patient pain and vascular damage, and avoids medical accidents.
Smart Images
Figure CN223696499U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a visible intravenous indwelling needle. Background Technology
[0002] Indwelling intravenous catheters are a commonly used medical device in the medical field, mainly used to provide patients with a long-term, stable intravenous infusion channel. However, traditional indwelling intravenous catheters have some problems in use. The needle core of traditional indwelling catheters is not visible on imaging. For patients with thin blood vessels, such as infants, inaccurate puncture sites are prone to occur during intravenous puncture, requiring repeated punctures, increasing patient pain, and potentially causing vascular damage and complications. During the use of indwelling catheters, if the patient's range of motion is large and the needle core breaks off from the catheter hub, allowing the needle core to enter the blood vessel through the puncture site, the exact location of the broken needle core cannot be found under medical imaging equipment, leading to adverse medical accidents, harming the patient's body, and easily causing medical disputes. Utility Model Content
[0003] To address the above problems, the purpose of this utility model is to provide a visible intravenous indwelling needle, thereby solving the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a radiopaque intravenous indwelling needle, comprising an indwelling body disposed at the free end of a catheter seat and used for placement in a blood vessel as a subsequent infusion channel, a puncture body movably connected to the catheter seat and the cavity of the indwelling body and used for puncturing the blood vessel and inserting the indwelling body into the blood vessel, and a heparin cap connected to the catheter seat via a flexible tube. The indwelling body is divided into a radiopaque section for displaying the position and shape of the indwelling body under medical imaging equipment, and an auxiliary section for connecting the radiopaque section to the catheter seat and cooperating with the puncture body to puncture the blood vessel and carry the radiopaque section into the blood vessel.
[0005] The beneficial effects of this invention are as follows: By providing a imaging section on the indwelling body, in the event of an accident where the indwelling body breaks off from the catheter seat and enters a blood vessel, the doctor can locate and clearly observe the position and shape of the indwelling needle in the blood vessel with the assistance of medical imaging equipment. When medical staff are administering intravenous infusions to patients, they can also more accurately locate the blood vessel, avoiding the pain and damage caused by accidental puncture or multiple punctures, and reducing the patient's suffering.
[0006] To facilitate observation of the location and morphology of the indwelling body:
[0007] As a further improvement to the above technical solution: the developing section is a developing tank formed on the inner wall of the indwelling body and a developing body disposed inside the developing tank.
[0008] The beneficial effects of this improvement are as follows: Since the indwelling body is not visible under imaging equipment, a contrasting groove is opened on the inner wall of the indwelling body, and the contrasting body is placed in the contrasting groove. When the indwelling body is inserted into the blood vessel or falls into the blood vessel, the position and shape of the indwelling body can be easily observed through imaging equipment. This design makes the indwelling body intact as a whole, with no splicing part in contact with the blood vessel. While having the contrasting function, it can also retain the softness of the indwelling body and reduce the friction between the indwelling body and the inner wall of the blood vessel.
[0009] To ensure clear imaging throughout the entire indwelling body:
[0010] As a further improvement to the above technical solution: the number of developing bodies can be single, and the length of the developing body is the same as the axial length of the retention body.
[0011] The beneficial effect of this improvement is that when there is only one developing body, its length matches the axial length of the indwelling body, ensuring a clear developing effect throughout the entire indwelling body.
[0012] To facilitate the calculation of the depth of insertion of the indwelling device and puncture site into the blood vessel:
[0013] As a further improvement to the above technical solution: the number of developing bodies is multiple, and the multiple developing bodies are evenly distributed along the axial direction of the indwelling body.
[0014] The beneficial effects of this improvement are: the number of imaging bodies can be set to multiple, evenly distributed in the imaging tank, with the same distance between two adjacent imaging bodies. By observing the number of imaging bodies inserted into the blood vessel under imaging equipment, it is easy to calculate the depth of insertion of the indwelling body and the puncture site into the blood vessel.
[0015] To ensure the stability and durability of the developing body:
[0016] As a further improvement to the above technical solution: the cross-section of the developing body is a closed ring.
[0017] The beneficial effects of this improvement are as follows: the developing body can be a ring-shaped object with developing function, or a ring-shaped object with developing paint or developing color lines on its surface. It covers the outside of the developing body, which not only makes it easier to observe the specific shape and position of the developing body, but also ensures the stability and durability of the developing body.
[0018] In order to obtain a clearer development result:
[0019] As a further improvement to the above technical solution: the developing section consists of multiple developing tanks evenly opened on the outer wall of the indwelling body and a developing body embedded inside the developing tank and adapted to the size of the developing tank.
[0020] The beneficial effects of this improvement are as follows: the imaging tank can be opened on the outer wall of the indwelling body, and the imaging body is wrapped around the outer side of the indwelling body. Compared with the inner wall of the indwelling body, the imaging body is directly exposed to the external environment, which is more direct with the detection of medical imaging equipment and may obtain a clearer imaging effect. However, the imaging body set on the outside will increase the friction between the indwelling body and the blood vessel.
[0021] To prevent the indwelling device from entering the blood vessel after it disconnects from the catheter hub:
[0022] As a further improvement to the above technical solution: a limiting part is provided at one end of the indwelling body near the catheter seat to prevent the indwelling body from entering the blood vessel after it is disconnected from the catheter seat.
[0023] The beneficial effects of this improvement are as follows: by setting a limiting part on the indwelling body, the limiting part can be semi-circular and located in the upper half of the indwelling body, so as to prevent the limiting part from compressing the patient's skin when the indwelling body is left in the blood vessel. The limiting part can increase the volume of the indwelling body, thereby preventing the indwelling body from entering the blood vessel after it is disconnected from the catheter seat. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;
[0025] Figure 2 This is a top cross-sectional view of the first embodiment of the present invention.
[0026] Figure 3 This is an enlarged structural diagram of point A in this utility model;
[0027] Figure 4 This is a top cross-sectional view of the second embodiment of the present invention;
[0028] Figure 5 This is an enlarged structural diagram of point B in this utility model;
[0029] Figure 6 This is a structural schematic diagram of the third embodiment of the present utility model.
[0030] In the diagram: 1. Catheter hub; 2. Indwelling body; 3. Puncture body; 4. Heparin cap; 5. Imaging section; 6. Auxiliary section; 7. Imaging tank; 8. Imaging body; 9. Needle holder handle; 10. Tube; 11. Flow stop clamp; 12. Protective cap; 13. Limiting section. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0032] The existing intravenous indwelling needle of this utility model mainly includes an indwelling body 2, which is disposed at the free end of the catheter seat 1 and is used to remain in the blood vessel as a subsequent infusion channel; a puncture body 3, which is movably connected to the inner lumen of the catheter seat 1 and the indwelling body 2 and is used to puncture the blood vessel and insert the needle core of the indwelling body 2 into the blood vessel; and a heparin cap 4, which is connected to the catheter seat 1 through the needle core of the indwelling body 2. The needle core of the indwelling body 2 can be left in the blood vessel and is usually made of silicone or similar materials, with good biocompatibility and flexibility; the puncture part is made of steel needle. A stainless steel puncture guide needle is used to puncture blood vessels and insert the indwelling body 2 needle core into the blood vessel. The heparin cap 4 is used to connect the infusion set or syringe and contains anticoagulants such as heparin to prevent blood clotting and blockage of the catheter. Existing intravenous indwelling needles also include a protective cap 12 for covering the puncture site needle and the indwelling body 2 needle core; a needle handle 9 for easy gripping and operation by medical staff; and 6 other auxiliary parts such as a rubber stopper and a flow-stopping clip 11 for sealing the heparin cap 4. The above is an introduction to existing intravenous indwelling needles.
[0033] As can be seen from the above, existing indwelling intravenous catheters have the following defects when in use. The needle core of traditional indwelling catheters does not have imaging effect. For patients with thin blood vessels, such as infants, the puncture position is easily inaccurate during intravenous puncture, requiring repeated punctures, which increases the patient's pain and may also cause vascular damage and complications. During the use of indwelling catheters, if the patient's range of motion is large and the needle core of the indwelling catheter breaks off from the catheter seat 1, causing the needle core to enter the blood vessel along the puncture site, the specific location of the broken needle core cannot be found under medical imaging equipment, thus causing adverse medical accidents, harming the patient's body, and easily causing medical disputes. Based on the above problems, this utility model adopts the following improvement method to solve them.
[0034] like Figure 1-6 As shown, a radiopaque intravenous catheter includes an indwelling body 2 disposed at the free end of a catheter seat 1 and used for placement in a blood vessel as a subsequent infusion channel; a puncture body 3 movably connected to the inner lumen of the catheter seat 1 and the indwelling body 2 for puncturing the blood vessel and inserting the indwelling body 2 into the blood vessel; and a heparin cap 4 connected to the catheter seat 1 via a tubing 10. The indwelling body 2 is divided into a radiopaque section 5 for displaying the position and shape of the indwelling body 2 under medical imaging equipment, and an auxiliary section 6 for connecting the radiopaque section 5 to the catheter seat 1 and cooperating with the puncture body 3 to puncture the blood vessel and carry the radiopaque section 5 into the blood vessel. With the radiopaque section 5 provided on the indwelling body 2, in the event of an accident where the indwelling body 2 breaks off from the catheter seat 1 and enters the blood vessel, the doctor can locate and clearly observe the position and shape of the indwelling needle in the blood vessel with the assistance of medical imaging equipment. It can also more accurately determine the puncture point and the position of the indwelling needle during intravenous infusion, avoiding repeated punctures due to inaccurate positioning and reducing patient suffering.
[0035] Furthermore, such as Figure 1-3 As shown, the imaging section 5 consists of an imaging tank 7 formed on the inner wall of the indwelling body 2 and an imaging body 8 disposed inside the imaging tank 7. Since the indwelling body 2 is not visualized under imaging equipment, an imaging tank 7 is formed on the inner wall of the indwelling body 2, and the imaging body 8 is disposed inside the imaging tank 7. When the indwelling body 2 is inserted into a blood vessel or falls into the blood vessel, the position and shape of the indwelling body 2 can be easily observed through imaging equipment. This design makes the indwelling body 2 completely intact, with no splicing points in the part that contacts the blood vessel. While having imaging function, it can also retain the softness of the indwelling body 2 and reduce the friction between the indwelling body 2 and the inner wall of the blood vessel.
[0036] Furthermore, such as Figure 1-3 As shown, the number of developing bodies 8 can be a single one, and the length of the developing body 8 is the same as the axial length of the retention body 2. When there is only one developing body 8, its length matches the axial length of the retention body 2, ensuring a clear developing effect throughout the entire retention body 2.
[0037] Furthermore, such as Figure 4 As shown, there are multiple imaging bodies 8, which are evenly distributed along the axial direction of the indwelling body 2. The number of imaging bodies 8 can be set to multiple, which are evenly distributed in the imaging tank 7. The distance between two adjacent imaging bodies 8 is the same. By observing the number of imaging bodies 8 inserted into the blood vessel under the imaging equipment, it is easy to calculate the depth of the indwelling body 2 and the puncture part inserted into the blood vessel.
[0038] Furthermore, such as Figure 2-4 As shown, the cross-section of the developing body 8 is a closed ring. The developing body 8 can be a ring-shaped object with developing function, or a ring-shaped object with developing paint or developing color lines on its surface. It covers the outside of the developing body 8, which not only makes it easy to observe the specific shape and position of the developing body 8, but also ensures the stability and durability of the developing body 8.
[0039] Furthermore, such as Figure 6 As shown, the imaging section 5 consists of multiple imaging grooves 7 evenly distributed on the outer wall of the indwelling body 2 and imaging bodies 8 embedded inside the imaging grooves 7 and adapted to the size of the imaging grooves 7. The imaging grooves 7 can be opened on the outer wall of the indwelling body 2, and the imaging bodies 8 are wrapped around the outer side of the indwelling body 2. Compared with the inner wall of the indwelling body 2, the imaging bodies 8 are directly exposed to the external environment, which is more direct with the detection of medical imaging equipment and may obtain a clearer imaging effect. However, the imaging bodies 8 set on the outer side will increase the friction between the indwelling body 2 and the blood vessels.
[0040] Furthermore, such as Figure 1As shown in Figure 6, a limiting part 13 is provided at one end of the indwelling body 2 near the catheter seat 1 to prevent the indwelling body 2 from entering the blood vessel after it is disconnected from the catheter seat 1. By providing the limiting part 13 on the indwelling body 2, the limiting part 13 can be semi-circular and located in the upper half of the indwelling body 2, so as to prevent the limiting part 13 from compressing the patient's skin when the indwelling body 2 is left in the blood vessel. The limiting part 13 can increase the volume of the indwelling body 2, thereby preventing the indwelling body 2 from entering the blood vessel after it is disconnected from the catheter seat 1.
[0041] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0042] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the protection scope of this utility model.
Claims
1. A radiopaque intravenous catheter, comprising an indwelling body (2) disposed at the free end of a catheter seat (1) for placement in a blood vessel and serving as a subsequent infusion channel, a puncture body (3) movably connected to the lumen of the catheter seat (1) and the indwelling body (2) for puncturing the blood vessel and inserting the indwelling body (2) into the blood vessel, and a heparin cap (4) connected to the catheter seat (1) via a tubing (10), characterized in that: The indwelling body (2) is divided into a imaging section (5) for displaying the position and shape of the indwelling body (2) under medical imaging equipment, and an auxiliary section (6) for connecting the imaging section (5) to the catheter seat (1) and cooperating with the puncture body (3) to puncture the blood vessel and carry the imaging section (5) into the blood vessel.
2. The visually detectable indwelling venous catheter according to claim 1, characterized in that: The developing section (5) consists of a developing tank (7) formed on the inner wall of the retention body (2) and a developing body (8) disposed inside the developing tank (7).
3. The visually detectable indwelling venous catheter according to claim 2, characterized in that: The number of developing bodies (8) can be single, and the length of the developing body (8) is the same as the axial length of the retention body (2).
4. The visually detectable indwelling venous catheter according to claim 2, characterized in that: The number of developing bodies (8) is multiple, and the multiple developing bodies (8) are evenly distributed along the axial direction of the retention body (2).
5. A radiopaque indwelling venous catheter according to claim 3 or 4, characterized in that: The cross-section of the developing body (8) is a closed ring.
6. The radiopaque indwelling venous catheter according to claim 1, characterized in that: The developing section (5) consists of multiple developing tanks (7) evenly distributed on the outer wall of the retention body (2) and a developing body (8) embedded inside the developing tanks (7) and adapted to the size of the developing tanks (7).
7. A radiopaque indwelling venous catheter according to claim 1, characterized in that: The indwelling body (2) is provided with a limiting part (13) at one end near the catheter seat (1) to prevent the indwelling body (2) from entering the blood vessel after it is disconnected from the catheter seat (1).