An epidural catheter fixation device

Abstract

The present invention provides an epidural catheter fixing device, which belongs to the field of medical tool technology. It includes a base, the top of the base is fixedly connected to a column, the bottom of the base is installed with a sticky rubber pad, and the top of the column is plugged with a top cover; a fixing component, the fixing component is used to fix the epidural catheter. The present invention sets a fixing component and uses a sticky rubber pad to stick and fix it to the patient's skin. This fixing method is not only firm and stable but also does not harm the patient's skin tissue. The fixing component can also wrap and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during the operation, thereby improving the stability of the epidural catheter fixation. The fixing component can also fix the joint of the epidural catheter, thereby assisting the operator in performing anesthesia injection on the patient, so that the joint part of the epidural catheter is stable during the anesthesia injection and will not be pulled and displaced, thereby improving the efficiency and safety of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical tools, and in particular to an epidural catheter fixing device. Background Art

[0002] Epidural anesthesia is the most common clinical anesthesia method in which local anesthetics are injected into the epidural space to block the spinal nerve roots and produce temporary paralysis in the area they control. Epidural anesthesia involves an important device, the epidural catheter, which is usually fixed with non-woven tape or a butterfly fixation device.

[0003] However, non-woven tape fixation has the following problems: 1. The effective fixation area with the skin is small, and the epidural catheter may fall off due to sweating, which can easily cause it to shift. 2. When the patient changes position, the epidural catheter often pulls on the non-woven tape due to changes in local tension, causing it to fall off.

[0004] The stability of the butterfly fixation device is unquestionable, but it needs to be sutured and fixed with the surrounding skin, which greatly increases the patient's discomfort and the complexity of the anesthesiologist's operation. Therefore, in order to improve the convenience of epidural catheter fixation and the stability of the epidural catheter after fixation, the present invention provides an epidural catheter fixation device to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an epidural catheter fixing device by setting a fixing component and fixing it to the patient's skin with a sticky rubber pad. This fixing method is not only firm and stable but also will not damage the patient's skin tissue. The fixing component can also wrap and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during the operation, thereby improving the stability of the epidural catheter fixation. The fixing component can also fix the joint of the epidural catheter, thereby assisting the operator to perform anesthesia injection on the patient, so that the joint part of the epidural catheter is stable and will not be pulled and displaced during the anesthesia injection, thereby improving the efficiency and safety of the operation. The above settings can solve the problems of poor fixing effect and inconvenient operation of the current epidural catheter fixing device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An epidural catheter fixing device comprises a base, the top of the base is fixedly connected to a column, the bottom of the base is installed with a sticky rubber pad, and the top of the column is plugged into a top cover; a fixing assembly, the fixing assembly is used to fix the epidural catheter, and the fixing assembly is respectively connected to the column and the base; the fixing assembly includes a side plate fixedly connected to one side of the base, and also includes an air bag inserted into the column, and a U-shaped rod is inserted into the top cover.

[0008] Optionally, an access channel is symmetrically installed on one side of the column, and a recess is symmetrically installed on the side of the column away from the access channel. The recess is an inwardly concave arc-shaped contour, and a wrapping tube with a "C"-shaped contour is fixedly connected at the center position of the column, and there is a gap between the wrapping tube and the access channel.

[0009] Optionally, a negative pressure cavity is opened through the column, and a first connecting groove and a circular hole are opened through the base. The outline of the first connecting groove coincides with the outline of the negative pressure cavity, and the first connecting groove and the negative pressure cavity are connected to each other. The circular hole is opened at the center position of the base.

[0010] Optionally, the airbag is inserted into the inner wall of the wrapping tube, and the outline of the airbag matches the outline of the wrapping tube. Both ends of the airbag are fixedly connected with a blocking part, and the blocking part is located in the gap between the access channel and the wrapping tube. The blocking part is fixedly connected with an extrusion part, and the extrusion part abuts against the inner wall at the connection position between the access channel and the column. An inflation tube is fixedly connected to the outer wall of the airbag.

[0011] Optionally, the top of the wrapping tube is symmetrically provided with an adaptation groove, the bottom of the top cover is symmetrically installed with a conical plug-in block corresponding to the position of the adaptation groove, the bottom of the top cover is fixedly connected to the inflation tube, and the bottom of the top cover is provided with a second communicating groove that matches the contour of the negative pressure chamber, the second communicating groove is communicated with the negative pressure chamber, and an inflation chamber connected to the inflation tube is provided in the second communicating groove.

[0012] Optionally, a pull rod is fixedly connected to the bottom of the U-shaped rod, and a piston that matches the contour of the negative pressure chamber is fixedly connected to the bottom of the pull rod, and the material of the piston is rubber.

[0013] Optionally, a weakening groove is provided at the connection position between the side panel and the base, and the weakening groove thins the side panel. Several arc-shaped plates are fixedly connected at the middle position of the side panel, and an outward-turned portion is fixedly connected to the end of the arc-shaped plate away from the side panel. The contour of the arc-shaped plate matches the contour of the column, and the outward-turned portion has an outward-turned arc-shaped contour, and the thickness of the arc-shaped plate is less than the thickness of the side panel.

[0014] Optionally, a plurality of hanging plates are fixedly connected to the top of the side panel, one end of the hanging plate is fixed to the side panel, and the other end is bent toward the top of the side panel, and the side panel, the curved plate and the hanging plate are an integrally manufactured structure.

[0015] Optionally, a plurality of clips are fixedly connected to the top of the top cover, and the plurality of clips are linearly arranged and correspond to the position of the access channel. The clip has a "C"-shaped profile, and both ends of the clip are fixedly connected to a guide portion, and the guide portion has an outwardly inclined arc surface. An inner clip is fixedly connected to the middle position of the clip, and one end of the inner clip is fixed to the clip, and the other end is bent toward the center position of the clip.

[0016] Optionally, a mounting groove matching the size of the sticky rubber pad is provided at the bottom of the base, a mounting block matching the contour of the first connecting groove is fixedly connected to the top of the sticky rubber pad, the sticky rubber pad is fixed to the base through the mounting block, a negative pressure hole is provided through the mounting block, and a hole matching the size of the circular hole is provided at the center of the sticky rubber pad.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by setting up a fixing component, not only can the epidural catheter be fixed on the surface of the patient's skin, but it can also be fixed to the patient's skin by using a sticky rubber pad. This fixing method is not only firm and stable but also will not damage the patient's skin tissue. The fixing component can also wrap and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during the operation, thereby improving the stability of the epidural catheter fixation. In addition, the fixing component can also fix the connector of the epidural catheter, thereby assisting the operator in performing anesthesia injection on the patient, so that the connector part of the epidural catheter is stable during the anesthesia injection and will not be pulled and displaced, thereby improving the efficiency and safety of the operation.

[0019] By setting a base and a sticky rubber pad, the base and the sticky rubber pad are not only fixed by plugging together through the mounting block, but the sticky rubber pad is also sticky in itself and can be directly adhered to the base. The base is adhered and fixed to the patient's skin surface with the help of the sticky rubber pad. This fixing method has better stability than the existing adhesive tape. Compared with the existing butterfly-shaped fixing device, the sticky rubber pad provided in this application does not need to be sutured and fixed to the patient, thereby improving the patient's comfort.

[0020] By setting up an airbag, after the airbag is inflated, the airbag that fits with the wrapping tube will squeeze the epidural catheter, thereby fixing the epidural catheter under the action of the squeezing force. Fixing the epidural catheter with the help of the airbag can prevent the epidural catheter from being pulled, thereby improving its stability. During the inflation of the airbag, the blocking part will expand in the gap between the access channel and the wrapping tube, and the squeezing part will also expand and press against the inner wall of the connection position between the access channel and the column. At this time, under the squeezing action of the blocking part and the squeezing part, the airbag can be limited and fixed to prevent the airbag from shaking and displacement in the column.

[0021] By setting a pull rod and a piston, when the operator pulls the U-shaped rod upwards, the piston will slide in the negative pressure chamber. During the upward sliding process of the piston, the gas inside the negative pressure chamber will be pushed into the second connecting groove. The gas will enter the inflation tube along the inflation chamber and inflate the airbag. After the airbag is inflated, it expands to fix the epidural catheter in the column. During the upward sliding process of the piston in the negative pressure chamber, the gas at the bottom of the negative pressure chamber will be sucked, so that negative pressure will be generated at the bottom of the negative pressure chamber. At this time, the negative pressure hole will adsorb the patient's skin, thereby further improving the firmness of the base to the patient's skin and preventing the base from falling and displacement.

[0022] By setting up the curved plate, since the contour of the curved plate coincides with the contour of the column, when the operator wraps the epidural catheter around the outer wall of the column, the curved plate can be used to squeeze and fix the epidural catheter, thereby preventing the wrapped epidural catheter from sliding and scattering on the outer wall of the column. The end of the curved plate is provided with an outward-turned portion, and the outward-turned portion has an outward-turned arc-shaped contour. The setting of this structure is, on the one hand, to prevent the end of the curved plate from scraping the epidural catheter and causing scratches to the epidural catheter, and on the other hand, to facilitate the operator to bend the curved plate outward. The setting of the outward-turned arc-shaped contour makes it more convenient for the operator to bend it by hand.

[0023] By setting a clip, the operator can clip and fix the connector at the end of the epidural catheter into the clip. The clip is set with a "C"-shaped profile. This setting is to improve the adaptability of the clip and the epidural catheter connector. When installing the connector of the epidural catheter in the clip, it is only necessary to press the connector from top to bottom. During the pressing process, the outward-inclined arc surface will guide the connector, improving the installation efficiency. Since one end of the inner clip is fixed to the clip and the other end is bent toward the center position of the clip, the inner clip can further squeeze and fix the connector, thereby improving the fixing effect of the clip on the epidural catheter connector. When the connector of the epidural catheter is fixed, the operator can connect other instruments such as syringes to the connector of the epidural catheter, and then perform anesthesia and other treatments on the patient. The fixed connector prevents the operator from pulling and displacing the connector of the epidural catheter during the surgical operation, thereby improving the success rate of the operation and the convenience of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the epidural catheter fixing device;

[0026] Figure 2 This is a schematic diagram of the top view of the structure of the base, columns, side panels and airbags;

[0027] Figure 3 This is a schematic diagram of the top view of the base and side panels;

[0028] Figure 4 This is a schematic diagram of the top view of the sticky rubber pad;

[0029] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixed component;

[0030] Figure 6 An enlarged schematic diagram of the three-dimensional structure of the base, columns and side panels;

[0031] Figure 7 It is an enlarged three-dimensional structural diagram of the column and the airbag;

[0032] Figure 8 It is a schematic diagram of the enlarged three-dimensional structure of the airbag;

[0033] Figure 9 This is an enlarged three-dimensional structural diagram of the top cover and the U-shaped rod;

[0034] Figure 10 This is a schematic diagram of the top cover's three-dimensional structure when viewed from above;

[0035] Figure 11 It is a schematic diagram of the cross-sectional three-dimensional structure of the top cover.

[0036] Reference numerals:

[0037] 1. Base; 101. Mounting slot; 102. Round hole; 103. First connecting slot; 2. Upright; 201. Access channel; 202. Wrapping cylinder; 203. Recessed portion; 204. Negative pressure chamber; 205. Adapter slot; 3. Side panel; 301. Weakened slot; 302. Arc-shaped plate; 303. Outward-turned portion; 304. Hanging plate; 4. Airbag; 401. Blocking portion; 402. Extrusion portion; 403. Inflating tube; 5. Sticky rubber pad; 501. Mounting block; 502. Negative pressure hole; 6. Top cover; 601. Conical plug block; 602. Inflating cylinder; 603. Second connecting slot; 604. Inflating chamber; 605. Clip; 606. Guide portion; 607. Inner clip; 7. U-shaped rod; 701. Pull rod; 702. Piston.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0039] The following describes in detail an epidural catheter fixation device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0040] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0041] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0043] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0044] like Figures 1 to 5 As shown, an embodiment of the present invention provides an epidural catheter fixing device, comprising a base 1, a column 2 is fixedly connected to the top of the base 1, a sticky rubber pad 5 is installed at the bottom of the base 1, and a top cover 6 is inserted at the top of the column 2; a fixing component, the fixing component is used to fix the epidural catheter, and the fixing component is connected to the column 2 and the base 1 respectively. Compared with the prior art, the epidural catheter fixing device provided by the present application can not only fix the epidural catheter on the surface of the patient's skin by setting the fixing component, but also adopts the sticky rubber pad 5 to stick and fix it to the patient's skin. Such a fixing method is not only firm and stable but also does not damage the patient's skin tissue. The fixing component can also wrap and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during surgery, thereby improving the stability of the epidural catheter fixation. In addition, the fixing component can also fix the joint of the epidural catheter, thereby assisting the operator to perform anesthesia injection on the patient and improving the efficiency of the operation.

[0045] As an implementation method in this embodiment, Figures 1 to 8As shown, the fixing assembly includes a side plate 3 fixedly connected to one side of the base 1, a first connecting groove 103 and a circular hole 102 are formed on the base 1, the circular hole 102 is formed at the center of the base 1, a mounting groove 101 adapted to the size of the sticky rubber pad 5 is formed at the bottom of the base 1, a mounting block 501 that matches the contour of the first connecting groove 103 is fixedly connected to the top of the sticky rubber pad 5, the sticky rubber pad 5 is fixed to the base 1 through the mounting block 501, and a hole body that matches the size of the circular hole 102 is formed at the center of the sticky rubber pad 5. The fixed component also includes an airbag 4 inserted into the column 2. An entry channel 201 is symmetrically installed on one side of the column 2. A recessed portion 203 is symmetrically installed on the side of the column 2 away from the entry channel 201. The recessed portion 203 is an inwardly concave arc profile. A wrapping tube 202 with a "C"-shaped profile is fixedly connected to the center of the column 2. There is a gap between the wrapping tube 202 and the entry channel 201. The airbag 4 is inserted into the inner wall of the wrapping tube 202, and the profile of the airbag 4 coincides with the profile of the wrapping tube 202. Both ends of the airbag 4 are fixedly connected to the blocking portion 40 1. The blocking portion 401 is located in the gap between the entry channel 201 and the wrapping tube 202. The blocking portion 401 is fixedly connected to the extrusion portion 402. The extrusion portion 402 abuts against the inner wall of the entry channel 201 and the column 2 at the connection position. The outer wall of the airbag 4 is fixedly connected to the inflation tube 403. In the fixed assembly, the base 1 and the column 2 are an integrated structure and are made of plastic. In the actual production process, they are injection molded as a whole. The structure of the base 1 and the column 2 is simple, so the production process is also simple and easier to manufacture. The base 1 and the sticky rubber pad 5 Not only are they fixed together by plugging in the mounting block 501, but the sticky rubber pad 5 is also sticky in itself and can be directly adhered to the base 1. During actual use, a layer of protective film will be adhered to the bottom of the sticky rubber pad 5. The operator has to tear off the protective film to expose the sticky rubber pad 5. The base 1 is adhered and fixed to the patient's skin surface with the help of the sticky rubber pad 5. This fixing method has better stability than the existing tape. Compared with the existing butterfly-shaped fixing device, the sticky rubber pad 5 provided in this application does not need to be sutured and fixed to the patient, thereby improving the patient's comfort.

[0046] The overall structure of the column 2 is an open circular outline. Two access channels 201 extend from one side of the column 2, and there is a gap between the two access channels 201. The wrapping tube 202 with a "C"-shaped outline at the center of the column 2 corresponds to the position of the circular hole 102 on the base 1. Therefore, in actual operation, the operator first allows the epidural catheter to pass from the bottom of the base 1 into the wrapping tube 202, and then insert it from the bottom to the top of the wrapping tube 202, and finally pass it out from the top of the wrapping tube 202 along the gap between the access channels 201. The epidural catheter passing through the column 2 can be wrapped around the top outer wall of the column 2 to prevent it from scattering outside and affecting the operator's anesthesia injection, while preventing the epidural catheter from being pulled and displaced.

[0047] The airbag 4 is inserted into the column 2 from top to bottom, and the outer wall of the airbag 4 fits with the inner wall of the wrapping tube 202. When the operator inserts the epidural catheter into the column 2, the epidural catheter is located on the inner wall of the airbag 4. After the operator inflates the airbag 4, the airbag 4 that fits with the wrapping tube 202 will squeeze the epidural catheter, thereby fixing the epidural catheter under the action of the squeezing force. Fixing the epidural catheter with the help of the airbag 4 can prevent the epidural catheter from being pulled and improve its stability. At the same time, during the expansion of the airbag 4, the blocking portion 401 will be between the access channel 201 and the wrapping tube. The airbag 4 expands in the gap between the cylinders 202, and the extrusion part 402 also expands and hits the inner wall of the connection position of the entry channel 201 and the column 2. At this time, under the extrusion action of the blocking part 401 and the extrusion part 402, the entry channel 201 and the wrapping part cooperate with the limiting effect of the blocking part 401 and the extrusion part 402, the airbag 4 can be limited and fixed to prevent the airbag 4 from shaking and displacement in the column 2. When the airbag 4 stops being inflated, the deflated airbag 4 can be easily taken out from the column 2. This arrangement makes it convenient for the operator to disassemble and replace the airbag 4, thereby increasing the service life of the device.

[0048] In this embodiment, if Figures 1 to 10As shown, a negative pressure chamber 204 is provided through the column 2, the contour of the first communicating groove 103 coincides with the contour of the negative pressure chamber 204, and the first communicating groove 103 and the negative pressure chamber 204 are communicated with each other, a negative pressure hole 502 is provided through the mounting block 501, and an adapting groove 205 is symmetrically provided on the top of the wrapping cylinder 202, and a conical plug-in block 601 corresponding to the position of the adapting groove 205 is symmetrically installed on the bottom of the top cover 6, and an inflation cylinder 602 is fixedly connected to the bottom of the top cover 6, and a second communicating groove 603 that coincides with the contour of the negative pressure chamber 204 is provided on the bottom of the top cover 6, and the second communicating groove 603 is communicated with the negative pressure chamber 204, and an inflation chamber 604 connected to the inflation cylinder 602 is provided in the second communicating groove 603, and the top cover 6 is plugged in. The bottom of the U-shaped rod 7 is fixedly connected to a pull rod 701, and the bottom of the pull rod 701 is fixedly connected to a piston 702 that matches the contour of the negative pressure chamber 204. The material of the piston 702 is rubber. A weakening groove 301 is provided at the connection position between the side panel 3 and the base 1. The weakening groove 301 thins the side panel 3. A plurality of arc plates 302 are fixedly connected to the middle position of the side panel 3. The end of the arc plate 302 away from the side panel 3 is fixedly connected to an outward turning portion 303. The contour of the arc plate 302 matches the contour of the column 2. The outward turning portion 303 has an outward-turned arc contour. The thickness of the arc plate 302 is less than the thickness of the side panel 3. A plurality of hanging plates 304 are fixedly connected to the top of the side panel 3. The end is fixed to the side panel 3, and the other end is bent toward the top of the side panel 3. The side panel 3, the curved plate 302 and the hanging plate 304 are an integrally manufactured structure. In the above structure, the top cover 6 is plugged into the top of the column 2 and fixed with the help of the conical plug block 601 and the adapter groove 205. Since the end of the conical plug block 601 is a conical structure expanding outward, and the contour of the adapter groove 205 is adapted to the contour of the conical plug block 601, the top cover 6 can be fixed with the help of the adaptability of the structure between the conical plug block 601 and the adapter groove 205. The bottom of the negative pressure chamber 204 in the column 2 is connected to the first connecting groove 103 on the base 1, and the top of the negative pressure chamber 204 is connected to the second connecting groove 603 on the top cover 6. The operator When the operator inserts the top cover 6 into the top of the column 2, the pull rod 701 and the piston 702 will also be inserted into the negative pressure chamber 204. At the same time, the inflation tube 602 at the bottom of the bottom cover will also be sleeved on the outside of the inflation tube 403 fixed on the airbag 4. When the top cover 6 is completely inserted into the top of the column 2, the piston 702 is located in the middle of the negative pressure chamber 204. When the operator pulls the U-shaped rod 7 upward, the U-shaped rod 7 drives the pull rod 701 to move upward. During the movement of the pull rod 701, the piston 702 will be pulled to slide in the negative pressure chamber 204. During the upward sliding of the piston 702, the gas inside the negative pressure chamber 204 will be pushed into the second connecting groove 603. Since the second connecting groove 603 is provided with an inflation chamber 604 connected to the inflation tube 602,Therefore, the gas will enter the inflation tube 602 along the inflation chamber 604 and inflate the airbag 4. After the airbag 4 is inflated, it expands to fix the epidural catheter in the column 2. At the same time, the piston 702 will suck the gas at the bottom of the negative pressure chamber 204 during the upward sliding process in the negative pressure chamber 204, so that the bottom of the negative pressure chamber 204 will generate negative pressure. Since the bottom of the negative pressure chamber 204 is interconnected with the first connecting groove 103 on the base 1, the negative pressure inside the negative pressure chamber 204 will be transmitted to the base 1. Since the base 1 is attached to the patient's skin surface through the sticky rubber pad 5, and the sticky rubber pad 5 is provided with a negative pressure hole 502, the negative pressure hole 502 will absorb the patient's skin, thereby further improving the firmness of the base 1 and the patient's skin and preventing the base 1 from falling or displacement.

[0049] As mentioned above, the operator can wrap the epidural catheter passing through the column 2 around the outer wall of the column 2. Since the recessed portion 203 on the column 2 has an inwardly recessed arc-shaped profile, when the operator wraps the epidural catheter, the inwardly recessed recessed portion 203 makes it easier for the operator to pick up the column 2 and perform the winding operation. Since the profile of the arc plate 302 matches the profile of the column 2, and one end of the arc plate 302 is fixed to the side plate 3, and the other end is an open structure, after the operator wraps the epidural catheter around the outer wall of the column 2, the epidural catheter can be squeezed and fixed with the help of the arc plate 302, thereby preventing the wrapped epidural catheter from sliding and scattering on the outer wall of the column 2. In addition, since a weakening groove 301 is provided at the connection position between the side plate 3 and the base 1, and the weakening groove 301 is on the side plate 3 is thinned, so this arrangement makes it easier for the side plate 3 to bend and deform at the position of the weakened groove 301. During the process of winding the epidural catheter, the operator can bend the side plate 3 outward to separate the curved plate 302 from the column 2, and reset the curved plate 302 after the epidural catheter is wound, so as to prevent the curved plate 302 from blocking the epidural catheter during the winding process, thereby improving the convenience of the operator's operation; further, since the end of the curved plate 302 is provided with an outward-turned portion 303, and the outward-turned portion 303 has an outward-turned arc-shaped contour, the arrangement of this structure is to prevent the end of the curved plate 302 from scratching the epidural catheter and causing scratches to the epidural catheter, and on the other hand, it is to facilitate the operator to bend the curved plate 302 outward, and the outward-turned arc-shaped contour is more convenient for the operator to bend it with his hands.

[0050] When the U-shaped rod 7 needs to be reset, the side plate 304 can be pulled outward to release the blocking of the U-shaped rod 7. The arrangement of multiple sets of hanging plates 304 on the side plate 3 is to allow the height of the U-shaped rod 7 to be adjusted at will, thereby adjusting the size of the expansion of the airbag 4 and the size of the adsorption force of the negative pressure chamber 204 on the patient's skin.

[0051] In this embodiment, if Figure 1 and Figures 9 to 11As shown, the top of the top cover 6 is fixedly connected with a plurality of clips 605, which are linearly arranged and correspond to the position of the access channel 201. The clip 605 has a "C"-shaped profile. Both ends of the clip 605 are fixedly connected with a guide portion 606. The guide portion 606 has an outwardly inclined arc surface. The middle position of the clip 605 is fixedly connected with an inner clip 607. One end of the inner clip 607 is fixed to the clip 605, and the other end is bent toward the center position of the clip 605. The clip 605 is set on the top cover. 6, and corresponds to the position of the access channel 201. When the operator wraps the epidural catheter around the surface of the column 2, the connector at the end of the epidural catheter can be clamped and fixed in the clip 605. At present, the connector of the epidural catheter is generally cylindrical, and the clip 605 is set as a "C" shape. This setting is to improve the adaptability of the clip 605 and the epidural catheter connector. Since both ends of the clip 605 are fixedly connected to the guide part 606, and the guide part 606 has an outwardly inclined arc surface, when the epidural catheter is wound around the surface of the column 2, the clip 605 can be clamped and fixed in the clip 605. When the connector is installed in the clip 605, it is only necessary to press the connector from top to bottom. During the pressing process, the outward inclined arc surface will guide the connector, causing the connector to squeeze the guide portion 606, and during the squeezing process, the guide portion 606 will expand and deform outward. During the deformation process, the connector of the epidural catheter can be directly inserted into the clip 605. An inner clip 607 is also installed in the middle position of the clip 605. Since one end of the inner clip 607 is fixed to the clip 605 and the other end is bent toward the center position of the clip 605, When the connector of the epidural catheter is pressed into the clip 605, the inner clip 607 can further squeeze and fix the connector, thereby improving the fixing effect of the clip 605 on the connector of the epidural catheter. When the connector of the epidural catheter is fixed, the operator can connect other instruments such as a syringe to the connector of the epidural catheter, and then perform anesthesia and other treatments on the patient. The fixed connector prevents the operator from pulling and displacing the connector of the epidural catheter during the surgical operation, thereby improving the success rate of the operation and the convenience of the operation.

[0052] The working principle of the technical solution provided by the present invention is as follows:

[0053] During use, the operator first allows the epidural catheter to pass from the bottom of the base 1 into the wrapping tube 202, then pass from the bottom to the top of the wrapping tube 202, and finally pass from the top of the wrapping tube 202 along the gap between the access channels 201. The epidural catheter passing through the column 2 can be wrapped around the top outer wall of the column 2 to prevent it from scattering outside and affecting the operator's anesthesia injection, and at the same time prevent the epidural catheter from being pulled and displaced. After the epidural catheter is wrapped, the operator tears off the protective film on the sticky rubber pad 5 to expose it, and then uses the sticky rubber pad 5 to adhere and fix the base 1 to the patient's skin surface. This fixing method is more stable than the existing tape. Compared with the existing butterfly fixing device, the sticky rubber pad 5 provided in this application does not need to be sutured and fixed to the patient, thereby improving the patient's comfort.

[0054] When the operator inserts the epidural catheter into the column 2, the top cover 6 is inserted into the top of the column 2. At this time, the pull rod 701 and the piston 702 are also inserted into the negative pressure chamber 204. At the same time, the inflation tube 602 at the bottom of the bottom cover is also sleeved on the outside of the inflation tube 403 fixed on the airbag 4. When the top cover 6 is completely inserted into the top of the column 2, the piston 702 is located in the middle of the negative pressure chamber 204. When the operator pulls the U-shaped rod 7 upward, the U-shaped rod 7 drives the pull rod 701 to move upward, and the pull rod 701 will pull the piston 702 during the movement. 2 slides in the negative pressure chamber 204. During the upward sliding process of the piston 702, the gas inside the negative pressure chamber 204 is pushed into the second connecting groove 603. Since the second connecting groove 603 is provided with an inflation chamber 604 connected to the inflation cylinder 602, the gas will enter the inflation cylinder 602 along the inflation chamber 604 and inflate the airbag 4. After the inflation, the airbag 4 expands to fix the epidural catheter in the column 2. During the upward movement of the U-shaped rod 7, it passes through the hanging plate 304 on the top of the side plate 3. Since one end of the hanging plate 304 is connected to the side plate 3, When the U-shaped rod 7 passes through the hanging plate 304 from bottom to top, the hanging plate 304 will be squeezed and deformed toward the side plate 3. When the U-shaped rod 7 passes through the hanging plate 304, the hanging plate 304 will automatically restore its deformation. When the U-shaped rod 7 moves downward, the hanging plate 304 bent toward the top of the side plate 3 will block the U-shaped rod 7. This setting is to prevent the U-shaped rod 7 from automatically resetting, thereby ensuring that the airbag 4 is always in an expanded state. When the piston 702 slides upward in the negative pressure chamber 204, it will press the negative pressure chamber 204. The gas at the bottom of the negative pressure chamber 204 is sucked, so that negative pressure is generated at the bottom of the negative pressure chamber 204. Since the bottom of the negative pressure chamber 204 is interconnected with the first connecting groove 103 on the base 1, the negative pressure inside the negative pressure chamber 204 will be transmitted to the base 1. Since the base 1 is attached to the patient's skin surface through the sticky rubber pad 5, and the sticky rubber pad 5 is provided with a negative pressure hole 502, the negative pressure hole 502 will adsorb the patient's skin, thereby further improving the firmness of the base 1 and the patient's skin, and preventing the base 1 from falling and displacement.

[0055] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An epidural catheter fixing device, comprising a base, characterized in that: The top of the base is fixedly connected to a column, the bottom of the base is installed with a sticky rubber pad, and the top of the column is plugged into a top cover; A fixing assembly, the fixing assembly is used to fix the epidural catheter, and the fixing assembly is connected to the column and the base respectively; The fixing assembly includes a side plate fixedly connected to one side of the base, and also includes an air bag inserted into the column, and a U-shaped rod is inserted into the top cover; An access channel is symmetrically installed on one side of the column, and a recessed portion is symmetrically installed on the side of the column away from the access channel. The recessed portion has an inwardly concave arc-shaped profile. A wrapping cylinder with a "C"-shaped profile is fixedly connected to the center of the column, and a gap exists between the wrapping cylinder and the access channel. A negative pressure cavity is formed through the column, and a first connecting groove and a circular hole are formed through the base. The contour of the first connecting groove matches the contour of the negative pressure cavity, and the first connecting groove and the negative pressure cavity are connected to each other. The circular hole is provided at the center of the base. The airbag is inserted into the inner wall of the wrapping tube, and the contour of the airbag matches the contour of the wrapping tube. Both ends of the airbag are fixedly connected to a blocking portion, and the blocking portion is located in the gap between the access channel and the wrapping tube. The blocking portion is fixedly connected to an extrusion portion, and the extrusion portion abuts against the inner wall of the connection position between the access channel and the column. The outer wall of the airbag is fixedly connected to an inflation tube. A weakened groove is provided at the connection position between the side panel and the base, and the weakened groove thins the side panel. A plurality of arc-shaped panels are fixedly connected to the middle position of the side panel, and an outward-turned portion is fixedly connected to one end of the arc-shaped panel away from the side panel. The contour of the arc-shaped panel matches the contour of the column, and the outward-turned portion has an outward-turned arc-shaped contour. The thickness of the arc-shaped panel is less than that of the side panel. A plurality of clips are fixedly connected to the top of the top cover. The clips are linearly arranged and correspond to the positions of the access channels. The clips have a "C"-shaped profile. Both ends of the clips are fixedly connected to guide portions. The guide portions have outwardly inclined arc surfaces. An inner clip is fixedly connected to the middle of the clip. One end of the inner clip is fixed to the clip, and the other end is bent toward the center of the clip. The bottom of the base is provided with a mounting groove that is adapted to the size of the sticky rubber pad, and the top of the sticky rubber pad is fixedly connected with a mounting block that matches the contour of the first connecting groove. The sticky rubber pad is fixed to the base through the mounting block, and a negative pressure hole is penetrated through the mounting block. A hole body that matches the size of the circular hole is opened at the center position of the sticky rubber pad.

2. The epidural catheter fixing device according to claim 1, characterized in that: The top of the wrapping tube is symmetrically provided with an adaptation groove, the bottom of the top cover is symmetrically installed with a conical plug-in block corresponding to the position of the adaptation groove, the bottom of the top cover is fixedly connected to the inflation tube, the bottom of the top cover is provided with a second communicating groove that matches the contour of the negative pressure chamber, the second communicating groove is communicated with the negative pressure chamber, and an inflation chamber connected to the inflation tube is provided in the second communicating groove.

3. The epidural catheter fixing device according to claim 1, characterized in that: The bottom of the U-shaped rod is fixedly connected to a pull rod, and the bottom of the pull rod is fixedly connected to a piston that matches the contour of the negative pressure chamber, and the material of the piston is rubber.

4. The epidural catheter fixing device according to claim 1, characterized in that: A plurality of hanging plates are fixedly connected to the top of the side plate, one end of the hanging plate is fixed to the side plate, and the other end is bent toward the top of the side plate. The side plate, the curved plate and the hanging plate are an integrally manufactured structure.

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