Epidural catheter fixing device

Abstract

The invention provides an epidural catheter fixing device, and belongs to the technical field of medical tools. Comprising a base, a stand column is fixedly connected to the top of the base, a viscous rubber pad is installed at the bottom of the base, and a top cover is inserted into the top of the stand column; and the fixing assembly is used for fixing the epidural catheter. According to the epidural catheter fixing device, the fixing assembly is arranged, the adhesive rubber pad is fixed to the skin of a patient in a pasted mode, the fixing mode is firm and stable, the skin tissue of the patient cannot be hurt, the fixing assembly can further wind and fix the epidural catheter exposed out of the body of the patient, and the epidural catheter is prevented from being pulled and displaced in the operation process; the fixing assembly can further fix a connector of the epidural catheter, so that an operator is assisted to conduct anesthesia injection on a patient, the stability of the connector part of the epidural catheter in the anesthesia injection process is good, the connector part of the epidural catheter cannot be pulled to move, and the operation efficiency and safety are improved.

Description

Technical Field

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

[0002] Epidural anesthesia is a clinically most common anesthesia method that injects local anesthetic into the epidural space to block spinal nerve roots and make the area they innervate temporarily paralyzed. An important device involved in epidural anesthesia is the epidural catheter, which is usually fixed by a non-woven fabric tape or a butterfly fixing device.

[0003] However, there are the following problems with the non-woven fabric tape fixation: 1. Due to the small effective fixation area with the skin and possible shedding caused by patient sweating, etc., the epidural catheter is prone to displacement. 2. When the patient changes body position, due to the change in local tension, the epidural catheter usually pulls the non-woven fabric tape, resulting in the non-woven fabric tape falling off; For the butterfly fixing device, the stability is beyond doubt, but it needs to be sutured and fixed to the surrounding skin, greatly increasing the discomfort of the patient and the complexity of the operation of the anesthesiologist. Therefore, in order to improve the convenience of epidural catheter fixation and the stability after the epidural catheter is fixed, the present invention provides an epidural catheter fixing device to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an epidural catheter fixing device. By setting a fixing component and using a sticky rubber pad to paste and fix with the patient's skin, such a fixing method is not only firm and stable but also does not harm the patient's skin tissue. The fixing component can also wind and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during the operation, improving the stability of the epidural catheter fixation. The fixing component can also fix the connector of the epidural catheter, thereby assisting the operator to perform anesthesia injection on the patient, making the connector part of the epidural catheter have good stability and not being pulled and displaced during the anesthesia injection process, improving the efficiency and safety of the operation. Through the above settings, the problems of poor fixing effect and inconvenient operation of the current epidural catheter fixing device can be solved.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: An epidural catheter fixing device, including a base, a column fixedly connected to the top of the base, a sticky rubber pad installed at the bottom of the base, and a top cover inserted into the top of the column; a fixing component for fixing the epidural catheter, the fixing component being respectively connected to the column and the base; the fixing component includes a side plate fixedly connected to one side of the base, and also includes an airbag inserted into the column, and a U-shaped rod inserted into the top cover.

[0006] Optionally, 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 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.

[0007] Optionally, a negative pressure chamber is opened through the column, and a first connecting groove and a circular hole are opened through the base. The contour of the first connecting groove coincides with the contour of the negative pressure chamber, and the first connecting groove and the negative pressure chamber are connected to each other, and the circular hole is opened at the center position of the base.

[0008] 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, 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, the extrusion part abuts against the inner wall at the connection position between the access channel and the column, and an inflation tube is fixedly connected to the outer wall of the airbag.

[0009] Optionally, the top of the wrapping tube is symmetrically provided with an adaptation groove, the bottom of the top cover is symmetrically provided with a conical plug-in block corresponding to the position of the adaptation groove, the bottom of the top cover is fixedly connected with an inflation tube, the bottom of the top cover is provided with a second connecting groove matching the contour of the negative pressure chamber, the second connecting groove is connected with the negative pressure chamber, and an inflation chamber connected with the inflation tube is provided in the second connecting groove.

[0010] 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 piston is made of rubber.

[0011] Optionally, 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 plates are fixedly connected at the middle position of the side panel, and an outward-turned portion is fixedly connected to one end of the arc plate away from the side panel. The contour of the arc 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 plate is less than the thickness of the side panel.

[0012] Optionally, 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, and the side plate, the arc plate and the hanging plate are an integrally manufactured structure.

[0013] Optionally, a plurality of clip pieces are fixedly connected to the top of the top cover. The plurality of clip pieces are linearly arranged and distributed corresponding to the position of the access channel. The clip pieces have a "C"-shaped profile. Both ends of the clip pieces are fixedly connected with guiding parts. The guiding parts have arc surfaces that are inclined outwards. An inner clamping part is fixedly connected to the middle position of the clip pieces. One end of the inner clamping part is fixed to the clip piece, and the other end bends towards the center position of the clip piece.

[0014] Optionally, an installation groove adapted to the size of the adhesive rubber pad is formed at the bottom of the base. An installation block that coincides with the profile of the first communication groove is fixedly connected to the top of the adhesive rubber pad. The adhesive rubber pad is fixed to the base through the installation block. A negative pressure hole is formed through the installation block. A hole body that coincides with the size of the round hole is formed at the center position of the adhesive rubber pad.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by providing the fixing assembly, not only can the epidural catheter be fixed on the patient's skin surface, but also the adhesive rubber pad is used to paste and fix it to the patient's skin. Such a fixing method is not only firm and stable but also does not harm the patient's skin tissue. The fixing assembly can also wind and fix the epidural catheter exposed outside the patient's body to prevent the epidural catheter from being pulled and displaced during the operation, improving the stability of the fixation of the epidural catheter. In addition, the fixing assembly 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 has good stability during the anesthesia injection and will not be pulled and displaced, improving the efficiency and safety of the operation.

[0016] By providing the base and the adhesive rubber pad, not only are they fixedly connected by inserting the installation block between the base and the adhesive rubber pad, but also the adhesive rubber pad has its own adhesiveness and can be directly adhered to the base. With the help of the adhesive rubber pad, the base is adhered and fixed to the patient's skin surface. Such a fixing method has better stability compared with the existing adhesive tape. Compared with the existing butterfly fixing device, the adhesive rubber pad provided in this application does not need to be sutured and fixed to the patient, thereby improving the comfort of the patient.

[0017] By providing the airbag, after the airbag is inflated, the airbag that fits the wrapping cylinder will squeeze the epidural catheter, so that the epidural catheter is fixed under the action of the squeezing force. With the help of the airbag to fix the epidural catheter, the epidural catheter can be prevented from being pulled and its stability can be improved. During the inflation process of the airbag, the blocking part will expand in the gap between the access channel and the wrapping cylinder, and the squeezing part will also expand and abut against the inner wall at 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 displacing in the column.

[0018] 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, and the gas inside the negative pressure chamber will be pushed into the second connecting groove during the upward sliding process of the piston, and 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, and the gas at the bottom of the negative pressure chamber will be sucked during the upward sliding process of the piston in the negative pressure chamber, so that negative pressure is generated at the bottom of the negative pressure chamber. At this time, the negative pressure hole will absorb the patient's skin, thereby further improving the firmness of the base to the patient's skin and preventing the base from falling and shifting.

[0019] By setting the arc plate, since the contour of the arc plate coincides with the contour of the column, when the operator wraps the epidural catheter around the outer wall of the column, the arc 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. An outward-turned portion is provided at the end of the arc plate, 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 arc plate from scratching the epidural catheter and causing scratches to the epidural catheter, and on the other hand, to facilitate the operator to bend the arc plate outward, and the setting of the outward-turned arc-shaped contour makes it more convenient for the operator to bend it by hand.

[0020] By setting the clip, the operator can clamp and fix the connector at the end of the epidural catheter in the clip. The clip is set with a "C"-shaped profile. This setting is to improve the compatibility of the clip and the connector of the epidural catheter. 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 arc surface inclined outward will guide the connector, thereby 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 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the epidural catheter fixing device; Figure 2 It is a schematic diagram of the top view of the structure of the base, columns, side panels and airbags; Figure 3 It is a schematic diagram of the top view of the structure of the base and the side panels; Figure 4 It is a schematic diagram of the structure of the sticky rubber pad from a top view; Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixed component; Figure 6 It is a schematic diagram of the enlarged three-dimensional structure of the base, columns and side panels; Figure 7 It is a schematic diagram of the enlarged three-dimensional structure of the column and the airbag; Figure 8 It is a schematic diagram of the enlarged three-dimensional structure of the airbag; Figure 9 It is a schematic diagram of the enlarged three-dimensional structure of the top cover and the U-shaped rod; Figure 10 It is a schematic diagram of the three-dimensional structure of the top cover when viewed from above; Figure 11 It is a schematic diagram of the three-dimensional structure of the top cover.

[0023] Reference numerals: 1. Base; 101. Mounting groove; 102. Round hole; 103. First connecting groove; 2. Post; 201. Access channel; 202. Wrapping tube; 203. Recessed portion; 204. Negative pressure chamber; 205. Adapter groove; 3. Side plate; 301. Weakened groove; 302. Arc 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 tube; 603. Second connecting groove; 604. Inflating chamber; 605. Clip; 606. Guide portion; 607. Inner clip portion; 7. U-shaped rod; 701. Pull rod; 702. Piston.

[0024] 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

[0025] The following will describe in detail an epidural catheter fixation device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0026] It should be noted that in the specification, references 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 includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0027] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0028] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner, such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0029] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein may be interpreted accordingly.

[0030] As Figures 1 to 5As shown in the figure, an embodiment of the present invention provides an epidural catheter fixation device, which includes 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. A top cover 6 is inserted into the top of the column 2. A fixing component is used to fix the epidural catheter. The fixing component is respectively connected to the column 2 and the base 1. Compared with the prior art, the epidural catheter fixation device provided in this application, by setting the fixing component, can not only fix the epidural catheter on the patient's skin surface, but also the fixing method uses the sticky rubber pad 5 to paste and fix with the patient's skin. Such a fixing method is not only firm and stable but also will not damage the patient's skin tissue. The fixing component can also wind and fix the epidural catheter exposed outside the patient to prevent the epidural catheter from being pulled and displaced during the operation, 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 to perform anesthesia injection on the patient and improving the operation efficiency.

[0031] As an implementation manner in this embodiment, as Figures 1 to 8As shown, the fixing component includes a side plate 3 fixedly connected to one side of the base 1. The base 1 is provided with a first communication groove 103 and a round hole 102 penetrating through it. The round hole 102 is opened at the central position of the base 1. An installation groove 101 adapted to the size of the adhesive rubber pad 5 is opened at the bottom of the base 1. A mounting block 501 that coincides with the contour of the first communication groove 103 is fixedly connected to the top of the adhesive rubber pad 5. The adhesive rubber pad 5 is fixed to the base 1 through the mounting block 501. A hole body that coincides with the size of the round hole 102 is opened at the central position of the adhesive rubber pad 5. The fixing component further includes an airbag 4 inserted into the column 2. Inlet channels 201 are symmetrically installed on one side of the column 2. Concave portions 203 are symmetrically installed on the side of the column 2 away from the inlet channels 201. The concave portions 203 have an inwardly concave arc-shaped contour. A wrapping cylinder 202 with a "C"-shaped contour is fixedly connected to the central position of the column 2. There is a gap between the wrapping cylinder 202 and the inlet channels 201. The airbag 4 is inserted into the inner wall of the wrapping cylinder 202, and the contour of the airbag 4 coincides with the contour of the wrapping cylinder 202. Both ends of the airbag 4 are fixedly connected with blocking portions 401. The blocking portions 401 are located in the gap between the inlet channels 201 and the wrapping cylinder 202. An extrusion portion 402 is fixedly connected to the blocking portion 401. The extrusion portion 402 abuts against the inner wall at the connection position of the inlet channels 201 and the column 2. An air charging pipe 403 is fixedly connected to the outer wall of the airbag 4. In the fixing component, the base 1 and the column 2 are of an integral structure and are made of plastic. During actual production, they are integrally injection-molded. Moreover, the structures of the base 1 and the column 2 are simple, so the production process is also simple and easier to manufacture. The base 1 and the adhesive rubber pad 5 are not only fixedly connected by inserting the mounting block 501, but also the adhesive rubber pad 5 has its own adhesiveness and can be directly adhered to the base 1. During actual use, a protective film is adhered to the bottom of the adhesive rubber pad 5, and the operator needs to tear off the protective film for the adhesive rubber pad 5 to be exposed. By means of the adhesive rubber pad 5, the base 1 is adhered and fixed to the patient's skin surface. Such a fixing method has better stability compared with the existing adhesive tape. Compared with the existing butterfly fixing device, the adhesive rubber pad 5 provided in this application does not need to be sutured and fixed to the patient, thus improving the patient's comfort level.

[0032] The overall structure of the column 2 is an open circular profile. 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 cylinder 202 with a "C" - shaped profile at the center position of the column 2 corresponds to the circular hole 102 on the base 1. Therefore, during actual operation, the operator first inserts the epidural catheter from the bottom of the base 1 into the wrapping cylinder 202, then inserts it from the bottom to the top of the wrapping cylinder 202, and finally passes it out from the top of the wrapping cylinder 202 along the gap between the access channels 201. The epidural catheter passing out of the column 2 can be wound around the outer wall of the top of the column 2, preventing it from being scattered outside and affecting the operator's anesthesia injection, and at the same time preventing the epidural catheter from being pulled and displaced.

[0033] The airbag 4 is inserted into the column 2 from top to bottom, and the outer wall of the airbag 4 is in contact with the inner wall of the wrapping cylinder 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 in contact with the wrapping cylinder 202 will squeeze the epidural catheter, so that the epidural catheter is fixed under the action of the squeezing force. By using the airbag 4 to fix the epidural catheter, the epidural catheter can be prevented from being pulled, improving its stability. At the same time, during the inflation process of the airbag 4, the blocking part 401 will expand in the gap between the access channel 201 and the wrapping cylinder 202, and the squeezing part 402 will also expand and abut against the inner wall at the connection position of the access channel 201 and the column 2. At this time, under the squeezing action of the blocking part 401 and the squeezing part 402, combined with the limiting effect of the access channel 201 and the wrapping part on the blocking part 401 and the squeezing part 402, the limiting and fixing of the airbag 4 can be realized, preventing the airbag 4 from shaking and displacing in the column 2. When the inflation of the airbag 4 stops, the deflated airbag 4 can be easily taken out from the column 2. Such a setting facilitates the operator to disassemble and replace the airbag 4, improving the service life of the device.

[0034] In this embodiment, as Figures 1 to 10As shown, a negative pressure chamber 204 is penetrated and opened on the column 2. The contour of the first communication groove 103 coincides with the contour of the negative pressure chamber 204, and the first communication groove 103 is in communication with the negative pressure chamber 204. A negative pressure hole 502 is penetrated and opened on the mounting block 501. Adaptation grooves 205 are symmetrically opened at the top of the wrapping cylinder 202. Conical insertion blocks 601 corresponding to the positions of the adaptation grooves 205 are symmetrically installed at the bottom of the top cover 6. An air inflation cylinder 602 is fixedly connected to the bottom of the top cover 6. A second communication groove 603 whose contour coincides with the contour of the negative pressure chamber 204 is opened at the bottom of the top cover 6. The second communication groove 603 is in communication with the negative pressure chamber 204. An air inflation chamber 604 communicated with the air inflation cylinder 602 is opened in the second communication groove 603. A U-shaped rod 7 is inserted into the top cover 6. A pull rod 701 is fixedly connected to the bottom of the U-shaped rod 7. A piston 702 whose contour coincides with the contour of the negative pressure chamber 204 is fixedly connected to the bottom of the pull rod 701. The piston 702 is made of rubber. A weakening groove 301 is opened at the connection position between the side plate 3 and the base 1. The weakening groove 301 thins the side plate 3. A plurality of arc-shaped plates 302 are fixedly connected to the middle position of the side plate 3. The end of the arc-shaped plate 302 away from the side plate 3 is fixedly connected with an outward-turning part 303. The contour of the arc-shaped plate 302 coincides with the contour of the column 2. The outward-turning part 303 has an outward-turning arc-shaped contour. The thickness of the arc-shaped plate 302 is less than the thickness of the side plate 3. A plurality of hanging plates 304 are fixedly connected to the top of the side plate 3. One end of the hanging plate 304 is fixed to the side plate 3, and the other end bends towards the top of the side plate 3. The side plate 3, the arc-shaped plate 302 and the hanging plate 304 are of an integrally manufactured structure. In the above structure, the top cover 6 is inserted into the top of the column 2, and the top cover 6 is fixed by means of the conical insertion block 601 and the adaptation groove 205. Since the end of the conical insertion block 601 is a conical structure that expands outwards, and the contour of the adaptation groove 205 is adapted to the contour of the conical insertion block 601, the fixing effect of the top cover 6 can be realized by means of the adaptability of the structure between the conical insertion block 601 and the adaptation groove 205. The bottom of the negative pressure chamber 204 in the column 2 is communicated with the first communication groove 103 on the base 1, and the top of the negative pressure chamber 204 is communicated with the second communication groove 603 on the top cover 6. During the process of the operator inserting 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 air inflation cylinder 602 at the bottom of the bottom cover will also be sleeved and fixed outside the air inflation tube 403 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 upwards, the U-shaped rod 7 drives the pull rod 701 to move upwards. During the movement of the pull rod 701, the piston 702 will be pulled to slide in the negative pressure chamber 204. When the piston 702 slides upwards, the gas inside the negative pressure chamber 204 will be pushed into the second communication groove 603. Since an air inflation chamber 604 communicated with the air inflation cylinder 602 is opened in the second communication groove 603,Therefore, the gas will enter the inflation tube 602 along the inflation cavity 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 cavity 204 during the upward sliding process in the negative pressure cavity 204, so that negative pressure is generated at the bottom of the negative pressure cavity 204. Since the bottom of the negative pressure cavity 204 is interconnected with the first connecting groove 103 on the base 1, the negative pressure inside the negative pressure cavity 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 and displacement.

[0035] 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 contour, 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 contour of the arc plate 302 coincides with the contour 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 arc plate 302 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 2. In addition, since a weakened groove 301 is provided at the connection position between the side plate 3 and the base 1, and the weakened 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 arc plate 302 from the column 2, and reset the arc plate 302 after the epidural catheter is wound, so as to prevent the arc 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 arc 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, on the one hand, to prevent the end of the arc plate 302 from scratching the epidural catheter and causing scratches to the epidural catheter, and on the other hand, to facilitate the operator to bend the arc plate 302 outward, and the outward-turned arc-shaped contour is more convenient for the operator to bend it by hand.

[0036] During the upward movement of the U-shaped rod 7, it will pass through the hanging plate 304 at the top of the side plate 3. Since one end of the hanging plate 304 is fixed to the side plate 3 and the other end bends towards the top of the side plate 3, when the U-shaped rod 7 passes through the hanging plate 304 from bottom to top, it will squeeze the hanging plate 304 to deform towards the side plate 3. After the U-shaped rod 7 passes through the hanging plate 304, the hanging plate 304 automatically restores its deformation. When the U-shaped rod 7 moves downward, the hanging plate 304 that bends towards the top of the side plate 3 will block and limit the U-shaped rod 7. Such a setting is to prevent the U-shaped rod 7 from automatically resetting, so as to ensure that the airbag 4 is always in an inflated state. When it is necessary to reset the U-shaped rod 7, only need to pull the side plate 3 outwards to release the block of the hanging plate 304 on the U-shaped rod 7. The setting of multiple groups of hanging plates 304 on the side plate 3 is to enable the height of the U-shaped rod 7 to be adjusted arbitrarily, so as to adjust the size of the inflation of the airbag 4 and the adsorption force of the negative pressure chamber 204 on the patient's skin.

[0037] In this embodiment, as Figure 1 and Figures 9 to 11As shown, a plurality of clamping pieces 605 are fixedly connected to the top of the top cover 6. The plurality of clamping pieces 605 are linearly arranged and distributed corresponding to the position of the access channel 201. The clamping pieces 605 have a "C" - shaped contour. Both ends of the clamping pieces 605 are fixedly connected with guiding parts 606. The guiding parts 606 have arc surfaces that are inclined outwards. At the middle position of the clamping pieces 605, an inner clamping part 607 is fixedly connected. One end of the inner clamping part 607 is fixed to the clamping piece 605, and the other end bends towards the center position of the clamping piece 605. The clamping pieces 605 are arranged on the top of the top cover 6 and correspond to the position of the access channel 201. When the operator winds the epidural catheter around the column 2, the connector at the end of the epidural catheter can be snap - fixed within the clamping pieces 605. At present, the connector of the epidural catheter is generally cylindrical, and the clamping pieces 605 are arranged with a "C" - shaped contour. Such a setting is to improve the adaptability between the clamping pieces 605 and the connector of the epidural catheter. Since both ends of the clamping pieces 605 are fixedly connected with guiding parts 606, and the guiding parts 606 have arc surfaces that are inclined outwards, when installing the connector of the epidural catheter into the clamping pieces 605, only need to press the connector from top to bottom. During the pressing process, the outwards - inclined arc surface will guide the connector, causing the connector to squeeze the guiding parts 606, and during the squeezing process, the guiding parts 606 will expand and deform outwards. During the deformation process, the connector of the epidural catheter can be directly inserted into the clamping pieces 605. An inner clamping part 607 is also installed at the middle position of the clamping pieces 605. Since one end of the inner clamping part 607 is fixed to the clamping piece 605 and the other end bends towards the center position of the clamping piece 605, when the connector of the epidural catheter is pressed into the clamping pieces 605, the inner clamping part 607 can further squeeze and fix the connector, thereby improving the fixing effect of the clamping pieces 605 on the connector of the epidural catheter. After the connector of the epidural catheter is fixed, the operator can dock 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 enables the operator not to pull and displace the connector of the epidural catheter during the surgical operation process, thereby improving the surgical success rate and the convenience of the operation.

[0038] The working principle of the technical solution provided by the present invention is as follows: During use, the operator first inserts the epidural catheter through the bottom of the base 1 into the wrapping cylinder 202, then inserts it from the bottom to the top of the wrapping cylinder 202, and finally passes it out through the gap between the access channels 201 from the top of the wrapping cylinder 202. The epidural catheter passing out of the column 2 can be wound around the outer wall of the top of the column 2 to prevent it from being scattered 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 wound, the operator tears off the protective film on the adhesive rubber pad 5 to expose it, and then uses the adhesive rubber pad 5 to adhesively fix the base 1 on the skin surface of the patient. This fixing method has better stability compared with the existing adhesive tape. Compared with the existing butterfly fixing device, the adhesive rubber pad 5 provided in this application does not need to be sutured and fixed with the patient, thus improving the comfort of the patient.

[0039] After 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 will also be inserted into the negative pressure chamber 204. At the same time, the air cylinder 602 at the bottom of the bottom cover will also be sleeved and fixed outside the air charging pipe 403 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 communication groove 603. Since the inflation chamber 604 communicating with the air cylinder 602 is provided in the second communication groove 603, the gas will enter the air cylinder 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. During the upward movement of the U-shaped rod 7, it will pass through the hanging plate 304 at the top of the side plate 3. Since one end of the hanging plate 304 is fixed to the side plate 3 and the other end bends towards the top of 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 towards the side plate 3. When the U-shaped rod 7 passes through the hanging plate 304, the hanging plate 304 automatically restores its deformation. When the U-shaped rod 7 moves downward, the hanging plate 304 bending towards the top of the side plate 3 will block and limit the U-shaped rod 7. Such a setting is to prevent the U-shaped rod 7 from automatically resetting, so as to ensure that the airbag 4 is always in an inflated state. During the upward sliding of the piston 702 in the negative pressure chamber 204, the gas at the bottom of the negative pressure chamber 204 will be 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 communicates with the first communication groove 103 on the base 1, the negative pressure inside the negative pressure chamber 204 will be transmitted to the base 1 at this time. Since the base 1 is attached to the patient's skin surface through the adhesive rubber pad 5, and the negative pressure holes 502 are provided on the adhesive rubber pad 5, the negative pressure holes 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 displacing.

[0040] The present invention covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An epidural catheter fixation device, comprising a base, characterized in that, A column is fixedly connected to the top of the base, a sticky rubber pad is installed at the bottom of the base, and a top cover is inserted into the top of the column; A fixing component, which is used to fix the epidural catheter, and the fixing component is respectively connected to the column and the base; The fixing component includes a side plate fixedly connected to one side of the base, and also includes an airbag inserted into the column, and a U-shaped rod is inserted into the top cover.

2. The epidural catheter fixation device according to claim 1, wherein, On one side of the column, access channels are symmetrically installed. On the side of the column away from the access channels, recessed parts are symmetrically installed. The recessed parts have an inwardly concave arc-shaped contour. At the central position of the column, a wrapping cylinder with a "C" - shaped contour is fixedly connected. There is a gap between the wrapping cylinder and the access channels.

3. The epidural catheter fixation device according to claim 2, wherein A negative pressure cavity is penetrated through the column. A first communication groove and a round hole are penetrated through the base. The contour of the first communication groove coincides with the contour of the negative pressure cavity, and the first communication groove communicates with the negative pressure cavity. The round hole is opened at the central position of the base.

4. The epidural catheter fixation device according to claim 2, characterized in that, The airbag is inserted into the inner wall of the wrapping cylinder, and the contour of the airbag coincides with the contour of the wrapping cylinder. Both ends of the airbag are fixedly connected with blocking parts. The blocking parts are located in the gap between the access channels and the wrapping cylinder. An extrusion part is fixedly connected to the blocking parts, and the extrusion part abuts against the inner wall at the connection position of the access channels and the column. An inflation tube is fixedly connected to the outer wall of the airbag.

5. The epidural catheter fixation device according to claim 3, characterized in that, On the top of the wrapping cylinder, fitting grooves are symmetrically opened. On the bottom of the top cover, tapered insertion blocks corresponding to the positions of the fitting grooves are symmetrically installed. An inflation cylinder is fixedly connected to the bottom of the top cover. A second communication groove with a contour coinciding with the negative pressure cavity is opened at the bottom of the top cover. The second communication groove communicates with the negative pressure cavity. An inflation cavity communicating with the inflation cylinder is opened in the second communication groove.

6. The epidural catheter fixation device according to claim 3, characterized in that, A pull rod is fixedly connected to the bottom of the U-shaped rod, and a piston with a contour coinciding with the negative pressure cavity is fixedly connected to the bottom of the pull rod. The piston is made of rubber.

7. The epidural catheter fixation device according to claim 1, characterized in that, A weakening groove is opened at the connection position of the side plate and the base. The weakening groove thins the side plate. Several arc-shaped plates are fixedly connected to the middle position of the side plate. The end of the arc-shaped plate away from the side plate is fixedly connected with an outward-turning part. The contour of the arc-shaped plate coincides with the contour of the column. The outward-turning part has an outward-turning arc-shaped contour. The thickness of the arc-shaped plate is less than the thickness of the side plate.

8. The epidural catheter fixation device according to claim 7, wherein Several 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 bends towards the top of the side plate. The side plate, the arc-shaped plate and the hanging plate are of an integrally manufactured structure.

9. The epidural catheter fixation device according to claim 2, wherein A plurality of clamping pieces are fixedly connected to the top of the top cover. The plurality of clamping pieces are linearly arranged and distributed corresponding to the position of the access channel. The clamping pieces have a "C"-shaped contour. Both ends of the clamping pieces are fixedly connected with guiding parts, and the guiding parts have arc surfaces inclined outwards. An inner clamping part is fixedly connected at the middle position of the clamping piece. One end of the inner clamping part is fixed to the clamping piece, and the other end bends towards the center position of the clamping piece.

10. The epidural catheter fixation device according to claim 3, characterized in that, An installation groove adapted to the size of the adhesive rubber pad is formed at the bottom of the base. An installation block that coincides with the contour of the first communication groove is fixedly connected to the top of the adhesive rubber pad. The adhesive rubber pad is fixed to the base through the installation block. A negative pressure hole is penetrated through the installation block, and a hole body that coincides with the size of the round hole is formed at the center position of the adhesive rubber pad.

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