Continuous administration and infusion system for intraspinal and peripheral nerve block

Abstract

The utility model provides an intraspinal and peripheral nerve block continuous administration infusion system which comprises an air bag, connecting catheters are symmetrically installed on the side wall of the air bag arranged in a skin layer, and a rubber isolation pad is installed in the middle of the interior of the air bag. One end of the connecting guide pipe is connected with a driving mechanism, the driving mechanism comprises a fixing shell, a micro pump and a storage battery are installed in the fixing shell, a switch is installed on the surface of the fixing shell, and the switch is electrically connected with the micro pump and the storage battery; the side wall of the micro pump is provided with two communicating pipes, and one communicating pipe is connected with the connecting guide pipe. The other communicating pipe is connected with an input catheter, and the input catheter penetrates through the skin layer and enters the epidural space from the space between the spinous protrusions. The intraspinal and peripheral nerve block continuous administration infusion system has the advantages of being simple in structure, small in size and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of peripheral nerve block technology, and in particular to a continuous drug delivery infusion system for spinal and peripheral nerve block. Background Technology

[0002] Continuous peripheral nerve block is a method of providing prolonged analgesia by placing a catheter in a peripheral nerve near the surgical area and continuously infusing local anesthetic drugs. This technique is mainly used for the management of postoperative pain and postherpetic neuralgia, and can reduce the use of opioids, decrease the incidence of adverse reactions, and promote rapid patient recovery.

[0003] When peripheral nerve blocks are used for analgesia, part of the infusion catheter is left inside the body. One end of the infusion catheter is connected to the infusion system, which contains components such as a drug reservoir, a liquid pump, and a battery. This results in the infusion system being too large, affecting the patient's daily activities. Furthermore, the patient needs to remove the infusion system during showering, which is very inconvenient.

[0004] Therefore, it is necessary to provide a new continuous drug delivery system for spinal and peripheral nerve blockade to solve the above problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a simple, small-sized, and easy-to-use continuous drug delivery system for spinal and peripheral nerve block.

[0006] To solve the above-mentioned technical problems, the present invention provides a continuous drug delivery system for spinal and peripheral nerve block, comprising: a balloon, wherein connecting catheters are symmetrically installed on the sidewalls of the balloon, which is placed inside the skin layer, and a rubber septum is installed in the center of the interior of the balloon; one end of the connecting catheter is connected to a drive mechanism, the drive mechanism comprising a fixed shell, a micro-pump and a battery are installed inside the fixed shell, a switch is installed on the surface of the fixed shell, and the switch is electrically connected to the micro-pump and the battery; two connecting tubes are respectively installed on the sidewalls of the micro-pump, one of which is connected to the connecting catheter; the other connecting tube is connected to an input catheter, which penetrates the skin layer, passes between the spinous processes, and enters the interior of the epidural space.

[0007] Preferably, a fixing block is installed inside one funnel-shaped end of the connecting conduit, and a locking ball is engaged inside the fixing block; a second spring is connected to the side wall of the locking ball, and the second spring is fixed inside the connecting conduit.

[0008] Preferably, one end of one of the connecting pipes is rotatably connected to a connector, and the connector is threadedly connected to the connecting conduit; the inside of the connector is fixedly connected to an L-shaped compression rod, and the compression rod penetrates the fixing block and abuts against the side wall of the ball.

[0009] Preferably, one end of the input conduit is rotatably connected to a fixing head, and the fixing head is threadedly connected to another connecting pipe, and the side wall of the input conduit is threadedly connected to an adjusting screw.

[0010] Preferably, sealing rings are installed at the connection between the input conduit and the fixed head, and at the connection between the connector and the connecting pipe.

[0011] Preferably, a charging port is installed on the side wall of the fixed housing, and the charging port is electrically connected to the battery.

[0012] Preferably, the airbag has a first spring symmetrically installed inside, and silicone pads symmetrically installed on the sidewalls of the airbag.

[0013] Compared with related technologies, the continuous drug delivery system for spinal and peripheral nerve block provided by this invention has the following advantages:

[0014] This invention provides a continuous drug delivery system for spinal and peripheral nerve block. A rubber septum is installed in the center of the balloon's interior, dividing the balloon's interior into two parts to facilitate the storage of different drug solutions. When analgesia is needed, the switch is turned on, activating the liquid pump. The liquid pump delivers the drug solution from the balloon into the epidural space through the connecting catheter and the input catheter, achieving intraspinal drug delivery. The drug diffuses within the epidural space and gradually enters the body to provide analgesia. The required medication can be selected according to the patient's needs, facilitating pain relief. During use, the airbag, connecting catheter, and input catheter are embedded inside the body, reducing the risk of infection. The drive mechanism is secured to the patient's skin with medical tape, making it easy for the patient to carry. The device is small in size, does not interfere with the patient's daily activities, and does not need to be disassembled for bathing, making it convenient for patients to use. It can be widely applied to non-healing wounds, postherpetic neuralgia, major orthopedic surgeries (such as total knee replacement and hip replacement), limb orthopedic surgeries, and long-term physical therapy. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the continuous drug delivery and infusion system for spinal and peripheral nerve block provided by this utility model;

[0016] Figure 2 for Figure 1The diagram shows the internal structure of the airbag.

[0017] Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point A.

[0018] Figure 4 for Figure 1 The diagram shows the internal structure of the fixed shell.

[0019] The diagram is labeled as follows: 1. Skin layer, 2. Spinous process, 3. Epidural space, 4. Infusion catheter, 41. Adjusting screw, 42. Fixing head, 5. Airbag, 51. Rubber septum, 52. First spring, 53. Silicone pad, 6. Connecting catheter, 61. Fixing block, 62. Clamping ball, 63. Second spring, 7. Drive mechanism, 71. Switch, 72. Fixing shell, 73. Connector, 74. Sealing ring, 75. Squeezing rod, 76. Connecting tube, 77. Micro pump, 78. Battery, 79. Charging port, 8. Spinal cord nerve, 9. Spine. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 A schematic diagram of a preferred embodiment of the continuous drug delivery and infusion system for spinal and peripheral nerve block provided by this utility model; Figure 2 for Figure 1 The diagram shows the internal structure of the airbag. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point A. Figure 4 for Figure 1The diagram shows the internal structure of the fixed shell. The continuous drug delivery system for spinal and peripheral nerve block includes: a balloon 5, with connecting catheters symmetrically mounted on the sidewalls of the balloon 5, which is placed inside the skin layer 1; a rubber septum 51 is installed in the center of the balloon 5; the rubber septum 51 divides the interior of the balloon 5 into two parts, facilitating the storage of different medications within the balloon 5, thus enabling the use of appropriate medications for analgesia; a first spring 52 is symmetrically mounted inside the balloon 5, and silicone pads 53 are symmetrically mounted on the sidewalls of the balloon 5. When injecting medication into the balloon 5, a non-traumatic needle penetrates the silicone pads 53 and extends into the interior of the balloon 5, facilitating the injection of medication. The medication causes the balloon 5 to inflate, pushing the first spring 52 to extend; after injection, the first spring 52 inside the balloon 5 contracts, causing the balloon 5 to contract, allowing the medication inside the balloon 5 to enter the interior of the micro-pump 77 through the connecting catheters 6, facilitating the operation of the micro-pump 77 to deliver the medication.

[0022] One end of the connecting conduit 6 is connected to the driving mechanism 7. The driving mechanism 7 includes a fixed shell 72, inside which a micro pump 77 and a storage battery 78 are installed. A switch 71 is installed on the surface of the fixed shell 72, and the switch 71 is electrically connected to the micro pump 77 and the storage battery 78. Two connecting pipes 76 are respectively installed on the side wall of the micro pump 77. One of the connecting pipes 76 is connected to the connecting conduit 6, and the other connecting pipe 76 is connected to the input conduit 4. The input conduit 4 penetrates the skin layer 1, passes between the spinous processes 2, and enters the epidural space 3. When analgesia is required, the switch 71 is turned on, and the liquid pump 77 moves. The liquid pump 77 delivers the drug solution inside the balloon 5 into the epidural space through the connecting conduit 6 and the input conduit 4. The drug diffuses inside the epidural space and gradually enters the body to provide analgesia. The required drug solution can be selected according to the patient's needs, making it convenient for the patient to receive analgesia.

[0023] A fixing block 61 is installed inside the funnel-shaped end of the connecting conduit 6, and a retaining ball 62 is engaged inside the fixing block 61. A second spring 63 is connected to the side wall of the retaining ball 62 and is fixed inside the connecting conduit 6. One end of one of the connecting pipes 76 is rotatably connected to a connector 73, which is threadedly connected to the connecting conduit 6. An L-shaped compression rod 75 is fixedly connected inside the connector 73, and the compression rod 75 penetrates the fixing block 61 and abuts against the side wall of the retaining ball 62. When the connecting conduit 6 is connected to the connecting pipe 76, the connector 73 rotates at one end of the connecting conduit 6. The connector 73 rotates in, and the connector 73 drives the squeezing rod 75 into the fixed block 61 to squeeze the retaining ball 62. The retaining ball 62 moves and squeezes the second spring 63, separating it from the fixed block 61, so that the medicine inside the connecting tube 6 passes through the fixed block 61 and enters the interior of the connecting tube 76. The connector 73 is rotatably connected to the connecting tube 76. When the connector 73 rotates, it does not drive the connecting tube 76 to rotate synchronously, which facilitates the folding of the connecting tube 76. When the connector 73 separates from the connecting tube 6, the second spring 63 pushes the retaining ball 62 to engage the fixed block 61, sealing the interior of the connecting tube 6.

[0024] One end of the input conduit 4 is rotatably connected to the fixing head 42, and the fixing head 42 is threadedly connected to another connecting pipe 76. This is to ensure that when the fixing head 42 is threadedly connected to the connecting pipe 76, the connecting pipe 76 is connected to the input conduit 4, and that the rotation of the fixing head 42 does not cause the input conduit 4 to rotate, thus preventing the input conduit 4 from kinking. The side wall of the input conduit 4 is threadedly connected to the adjusting screw 41. This is to facilitate opening and rotating the adjusting screw 41 to change the gap between the adjusting screw 41 and the input conduit 4, thereby controlling the input volume of the medicine inside the input conduit 4.

[0025] Sealing rings 74 are installed at the connection between the input conduit 4 and the fixing head 42, and at the connection between the connector 73 and the connecting pipe 76, in order to increase the sealing of the connection and prevent the medicine from leaking.

[0026] A charging port 79 is installed on the side wall of the fixed housing 72, and the charging port 79 is electrically connected to the storage battery 78 in order to facilitate the transmission of current to the storage battery 78 through the charging port 79 and to store energy in the storage battery 78.

[0027] The working principle of the continuous drug delivery system for spinal and peripheral nerve block provided by this utility model is as follows: According to the patient's needs, the balloon 5 is first embedded in the skin layer 1 at the location where analgesia is required. Then, the infusion catheter 4 penetrates the skin layer 1, passes between the spinous processes 2, and enters the epidural space 3. The infusion catheter 4 is located lateral to the vertebral column 9 and spinal nerve 8, and does not directly contact the vertebral column 9 and spinal nerve 8 (as shown in the attached diagram). Figure 1 (As shown), to avoid damage to the spine 9 and spinal nerve 8; connect the connecting catheter 6 to the communicating tube 76, the connector 73 rotates at one end of the connecting catheter 6, as the connector 73 rotates in, the connector 73 drives the squeezing rod 75 into the fixing block 61 to squeeze the retaining ball 62, the retaining ball 62 moves to squeeze the second spring 63 and separate from the fixing block 61, thereby keeping the connecting catheter 6 and the communicating tube 76 connected; then thread the fixing head 42 to the communicating tube 76, and use medical tape to stick the fixing shell 72 to the patient's skin to complete the assembly of this device. A non-invasive needle is inserted through the silicone pad 53 into the airbag 5 to facilitate the injection of medication into the airbag 5. The medication causes the airbag 5 to inflate, pushing the first spring 52 to extend. Medication is injected into both sides of the rubber septum 51 according to the patient's needs. After injection, the first spring 52 inside the airbag 5 contracts, causing the airbag 5 to contract, allowing the medication inside the airbag 5 to enter the micro-pump 77 through the connecting catheter 6. When analgesia is needed, the corresponding switch 71 is turned on according to the required medication, activating the liquid pump 77. The liquid pump 77 delivers the medication from the airbag 5 into the epidural space through the connecting catheter 6 and the input catheter 4. The medication directly enters the spinal canal and gradually diffuses within the epidural space 3, providing analgesia.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A continuous drug delivery system for spinal and peripheral nerve blockade, characterized in that, include: Airbag (5), with connecting tubes (6) symmetrically installed on the sidewalls of the airbag (5) placed inside the skin layer (1), and a rubber septum (51) installed in the center of the inside of the airbag (5). One end of the connecting conduit (6) is connected to the drive mechanism (7). The drive mechanism (7) includes a fixed shell (72). A micro pump (77) and a storage battery (78) are installed inside the fixed shell (72). A switch (71) is installed on the surface of the fixed shell (72), and the switch (71) is electrically connected to the micro pump (77) and the storage battery (78). Two connecting tubes (76) are installed on the side wall of the micro pump (77). One of the connecting tubes (76) is connected to the connecting conduit (6). The other connecting tube (76) is connected to the input conduit (4), and the input conduit (4) passes through the skin layer (1), passes between the spinous processes (2), and enters the interior of the epidural space (3).

2. The continuous drug delivery system for spinal and peripheral nerve block according to claim 1, characterized in that, The connecting conduit (6) has a funnel-shaped end with a fixing block (61) installed inside, and the fixing block (61) has a locking ball (62) inside; the side wall of the locking ball (62) is connected to a second spring (63), and the second spring (63) is fixed inside the connecting conduit (6).

3. The continuous drug delivery system for spinal and peripheral nerve blockade according to claim 2, characterized in that, One end of one of the connecting pipes (76) is rotatably connected to a connector (73), and the connector (73) is threadedly connected to the connecting conduit (6); the inside of the connector (73) is fixedly connected to an L-shaped extrusion rod (75) with its sidewall in the shape of an "L", and the extrusion rod (75) penetrates the fixing block (61) and abuts against the sidewall of the ball (62).

4. The continuous drug delivery system for spinal and peripheral nerve block according to claim 3, characterized in that, One end of the input conduit (4) is rotatably connected to the fixing head (42), and the fixing head (42) is threadedly connected to another connecting pipe (76). The side wall of the input conduit (4) is threadedly connected to the adjusting screw (41).

5. The continuous drug delivery system for spinal and peripheral nerve block according to claim 4, characterized in that, Sealing rings (74) are installed at the connection between the input conduit (4) and the fixed head (42), and at the connection between the connector (73) and the connecting pipe (76).

6. The continuous drug delivery system for spinal and peripheral nerve block according to claim 1, characterized in that, A charging port (79) is installed on the side wall of the fixed housing (72), and the charging port (79) is electrically connected to the battery (78).

7. The continuous drug delivery system for spinal and peripheral nerve block according to claim 1, characterized in that, The first spring (52) is symmetrically installed inside the airbag (5), and silicone pads (53) are symmetrically installed on the sidewalls of the airbag (5).

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