An indwelling needle
By introducing a support structure with an elastic rod and abutment components into the indwelling needle, the problem of wobbling caused by the flexibility of the tape was solved, achieving a stable connection with the blood vessel and reducing the number of punctures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU XINJIN SHIFENG MEDICAL APP ANDINSTR CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-02
AI Technical Summary
Existing indwelling needles, after being secured with tape, are prone to wobbling from side to side due to the flexibility of the tape, affecting their connection with blood vessels.
An indwelling needle was designed, comprising a catheter tube, a cannula, a syringe, a needle holder handle, a fitting strap, an elastic rod, and a support component. The elastic rod and the support component work together to form a support structure, preventing the catheter tube from swaying from side to side.
It effectively prevents the indwelling needle from shaking due to external forces during use, ensuring a stable connection with the blood vessel and reducing the number of punctures.
Smart Images
Figure CN224307637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of indwelling needle technology, and more specifically, to an indwelling needle. Background Technology
[0002] An indwelling needle is a channel left in the human body to connect to a blood vessel, so as to facilitate the injection and aspiration of fluids without the need for multiple punctures.
[0003] However, existing indwelling needles are stabilized with adhesive tape after being inserted into the body. But because of the flexibility of the tape itself, the indwelling needle is still prone to swaying from side to side, which can affect the connection with the blood vessels. Utility Model Content
[0004] The purpose of this invention is to provide an indwelling needle that solves the problem that after the indwelling needle is secured with tape, the tape's flexibility makes it easy for the needle to wobble from side to side, affecting its connection with the blood vessel.
[0005] This utility model is achieved through the following technical solution:
[0006] This utility model provides an indwelling needle, including a catheter tube, one end of which is provided with a sleeve, and the end of the catheter tube away from the sleeve is connected to a syringe. A needle-holding handle is provided on one side of the syringe, and a fitting tape is connected to the side wall of the syringe. An elastic rod is provided on one side of the fitting tape, and a stop component is connected to the middle of the elastic rod.
[0007] Preferably, the bonding tape consists of two adhesive tapes wrapped around the side wall of the conduit tube.
[0008] Preferably, the two ends of the elastic rod are connected to the sidewall of the bonding strip, and the elastic rod is made of spring steel.
[0009] Preferably, the abutment component includes an abutment block and a connecting block, the abutment block being connected to one side of the elastic rod, and the connecting block being disposed on both sides of the bottom of the abutment block.
[0010] Preferably, the connecting block is a spherical protrusion that extends in an arc shape from the abutment to the ring.
[0011] Preferably, the connecting block is connected to the elastic rod via a stop block.
[0012] Preferably, the blocks are arranged in a plurality of blocks, which are then attached together.
[0013] The technical solution of this utility model has at least the following advantages and beneficial effects:
[0014] 1. The elastic rod and the abutment component in the device stretch and straighten the guide tube when it is connected by the bonding tape, so that the abutment component moves closer together. After the guide tube is connected by the bonding tape, the elastic rod will provide support on both sides, preventing the guide tube from swaying from side to side. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a front view cross-sectional structural diagram of the guide tube of this utility model.
[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.
[0018] Figure 4 This is a front view structural diagram of the abutment block of this utility model.
[0019] Figure 5 This is a schematic diagram showing the state of the bonding tape and the elastic rod of this utility model.
[0020] Reference numerals: 1-catheter tube, 101-cannula, 102-adhesive tape, 103-elastic rod, 1031-stop block, 1032-connecting block, 2-syringe, 201-needle handle. Detailed Implementation
[0021] The following is combined Figures 1 to 5 This utility model will be described in detail.
[0022] An indwelling needle includes a catheter tube 1, one end of which is provided with a cannula 101, and the end of the catheter tube 1 away from the cannula 101 is connected to a syringe 2. A needle-holding handle 201 is provided on one side of the syringe 2, and an adhesive strip 102 is connected to the side wall of the syringe 2. An elastic rod 103 is provided on one side of the adhesive strip 102, and an abutment component is connected to the middle of the elastic rod 103.
[0023] First, the syringe 2 is connected to the catheter tube 1. The needle at one end of the syringe 2 passes through the cannula 101, with one end of the needle protruding from the opening at one end of the cannula 101. Then, by controlling the needle handle 201, the syringe 2 and the catheter tube 1 are moved so that the needle passes through the skin and pulls the cannula 101 into the blood vessel. Then, the syringe 2 and the needle are removed from the catheter tube 1, leaving the cannula 101 in the blood vessel, thus forming a channel connecting the blood vessel to facilitate injection without the need for multiple punctures.
[0024] Furthermore, the adhesive tape 102 consists of two adhesive tapes wrapped around the side wall of the conduit tube 1.
[0025] After placing the catheter tube 1 on the hand, the adhesive strip 102 on the side wall of the catheter tube 1 is pulled open from one end to extend it, and then it can be attached to the skin for adhesion. The extension of the two adhesive strips 102 in different directions stabilizes the catheter tube 1 and prevents it from shaking.
[0026] Furthermore, the elastic rod 103 is connected to the side wall of the bonding strip 102 at both ends. The elastic rod 103 is made of spring steel. The abutment component includes abutment block 1031 and connecting block 1032. Abutment block 1031 is connected to one side of the elastic rod 103. Connecting block 1032 is located on both sides of the bottom of abutment block 1031. Connecting block 1032 is a spherical protrusion that extends in an arc from abutment block 1031. Connecting block 1032 is connected to elastic rod 103 through abutment block 1031. Several abutment blocks 1031 are arranged in a row and are fitted together.
[0027] When the adhesive tape 102 is stretched and extended to adhere to the skin, because the adhesive tape 102 will be in a certain parallel state, it will pull the elastic rod 103 to a certain extent, straightening the bent elastic rod 103. When the elastic rod 103 is straightened, it will cause several blocks 1031 connected on one side to move closer to each other, so that they are attached together to form a straight line as a whole, and the elastic rod 103 will not continue to deform. As a result, an auxiliary support frame will be formed on both sides of the catheter tube 1, so that after the catheter tube 1 is connected by the adhesive tape 102, the catheter tube 1 will not be easily affected by external forces and will not sway left and right.
[0028] The following is a detailed implementation process of this utility model: First, the syringe 2 and the catheter tube 1 are connected together. The needle at one end of the syringe 2 passes through the cannula 101, with one end of the needle protruding from the opening at one end of the cannula 101. Then, by controlling the needle-holding handle 201, the syringe 2 and the catheter tube 1 are moved, allowing the needle to pass through the skin and pull the cannula 101 into the blood vessel. Then, the syringe 2 and the needle are removed from the catheter tube 1, leaving the cannula 101 in the blood vessel, thus forming a channel connecting the blood vessel for convenient injection without the need for multiple punctures. After the catheter tube 1 is left in the hand, the adhesive tape 102 on the side wall of the catheter tube 1 is pulled open from one end to extend it, and then it can be adhered to the skin. The extension of the adhesive band 102 in different directions stabilizes the catheter tube 1, preventing it from shaking. When the adhesive band 102 is stretched and extended to adhere to the skin, it will be in a certain parallel state, which will pull the elastic rod 103 to straighten the bent elastic rod 103. When the elastic rod 103 is straightened, it will cause several blocks 1031 connected on one side to move closer together, forming a straight line. This also prevents the elastic rod 103 from deforming further, thus forming an auxiliary support frame on both sides of the catheter tube 1. After the catheter tube 1 is connected by the adhesive band 102, it will not be easily affected by external forces and will not shake from side to side.
Claims
1. An indwelling needle, comprising a catheter tube (1), one end of which is provided with a cannula (101), the other end of which, away from the cannula (101), is connected to a syringe (2), and a needle-holding handle (201) is provided on one side of the syringe (2), characterized in that, The side wall of the syringe (2) is connected to an adhesive strip (102), and an elastic rod (103) is provided on one side of the adhesive strip (102). An abutment component is connected to the middle of the elastic rod (103).
2. The indwelling needle according to claim 1, characterized in that, The adhesive tape (102) consists of two adhesive tapes wrapped around the side wall of the conduit tube (1).
3. The indwelling needle according to claim 1, characterized in that, The elastic rod (103) is connected at both ends to the side wall of the bonding strip (102), and the elastic rod (103) is made of spring steel.
4. The indwelling needle according to claim 1, characterized in that, The abutment component includes an abutment block (1031) and a connecting block (1032). The abutment block (1031) is connected to one side of the elastic rod (103), and the connecting block (1032) is disposed on both sides of the bottom of the abutment block (1031).
5. An indwelling needle according to claim 4, characterized in that, The connecting block (1032) is a spherical protrusion that extends in an arc shape from the abutment block (1031).
6. An indwelling needle according to claim 4, characterized in that, The connecting block (1032) is connected to the elastic rod (103) via the abutment (1031).
7. An indwelling needle according to claim 4, characterized in that, The abutment blocks (1031) are arranged in a plurality of ways, and the plurality of abutment blocks (1031) are attached together.