CN115998972A - Negative pressure drainage device for field operations - Google Patents

Abstract

The invention provides a negative pressure drainage device for field operations, belonging to the technical field of medical appliances; the medical device comprises a catheter, a drainage ball is sleeved at one end of the catheter, a shielding end is connected to the other end of the catheter and used for contacting the skin of a patient, negative pressure is generated through the action of the drainage ball to absorb tissue fluid flowing out of a wound of the patient, and the shielding end comprises a contact piece and a sleeve piece which are connected. According to the invention, tissue fluid at the cross-shaped groove is slowly drained into the catheter through the holes on the connecting edge, and the connecting edge is positioned in the rubber surface, so that the holes are prevented from being in direct contact with the skin of a patient, the catheter is prevented from being adsorbed to the tissue of a human body, the drainage effect of the catheter on the tissue fluid is prevented from being influenced, meanwhile, the pain of the patient is increased, the stability of the periphery of the inner baffle ring is increased by the supporting plate, and meanwhile, the supporting plate is matched with the negative pressure film to guide the tissue fluid flowing out of the outer end of the cross-shaped groove.

Description

A negative pressure drainage device for field use

technical field

The invention relates to the technical field of medical devices, in particular to a field-use negative pressure drainage device.

Background technique

Negative pressure drainage device is a commonly used medical device in clinical practice. The negative pressure drainage device is used to connect with the drainage tube implanted in the patient's body to drain blood, gas, pus, postoperative exudate, etc. in the chest cavity and abdominal cavity to the outside of the body. , to change the biological environment of the infection site, inhibit local bacterial reproduction, and prevent the spread of infection.

In the prior art, the negative pressure drainage device generally uses one end of the catheter to be inserted into the needle, and the other end is inserted into the patient's wound, and the wound is sutured. Negative pressure equipment takes the body fluid and blood in the patient's body to the outside of the patient's body through one end of the catheter. The negative pressure equipment generates negative pressure, making the biofilm slowly stick to the patient's wound, but there are still the following problems:

When it is used in the field, when the patient’s arm or leg is injured, the interstitial fluid in the wound needs to be discharged. One end of the catheter extends into the wound. When the negative pressure device generates negative pressure, the catheter drains the interstitial fluid to the outside of the body. The end of the catheter is easily adsorbed to the tissue of the human body, which affects the drainage effect of the catheter on the interstitial fluid, and also increases the pain of the patient. Therefore, the application provides a negative pressure drainage device for field use to meet the demand.

Contents of the invention

The technical problem to be solved by the present invention is to provide a negative pressure drainage device for field use to solve the problem that the end of the existing catheter is adsorbed on the tissue of the human body, which affects the drainage effect of the catheter on the interstitial fluid, and also increases the pain of the patient problem of feeling.

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

A negative pressure drainage device for field use, comprising: a catheter, one end of the catheter is sleeved with a drainage ball, the other end of the catheter is connected with a shielding end, and the shielding end is used to contact the patient's skin, and Negative pressure is generated by the function of the drainage ball to absorb the interstitial fluid flowing out of the patient's wound; the shielding end includes a connected contact piece and a socket, and the contact piece includes a low ring connected to the socket, so The inner wall of the low ring is fixedly connected with an inner stop ring in the form of a vortex ring, and the bottom end of the inner stop ring is fixedly connected with a rubber surface, and the rubber surface is provided with a cross-shaped groove, and the cross-shaped The side wall of the groove facing the side of the inner retaining ring is fixedly connected with a connecting edge with a hole, and the sleeve is connected with the conduit; device.

Preferably, a plurality of liquid passage holes are opened on the outer wall of the inner retaining ring, and a pair of support plates are fixedly connected to the outer wall of the inner retaining ring at each of the liquid passage holes.

Preferably, the socket includes an inner ring and a side edge fixedly connected to the inner edge and outer edge of the low ring respectively, the inner side wall of the side edge is fixedly connected with a plurality of protrusions, and the outer side of the inner ring The wall is provided with a plurality of grooves adapted to the protrusions, the side wall of the conduit is sleeved between the inner ring and the side, the top of the inner ring is inclined inward, and the side Notches are opened on opposite sides of the lower ring, and the side edges can be turned along the two sides of the low ring.

Preferably, the shielding end further includes a plurality of cutting pieces connected to the upper end of the inner ring, the cutting pieces are used to cut off the negative pressure film, and make the conduit communicate with the contact piece, each The cutting part includes an L-shaped cutting groove opened inside the inner ring, the inner side wall of the cutting groove is fixedly connected with a fixed post, and the outer side wall of the fixed post is rotatably connected with a rotating rod. One end of the rod protrudes from the outside of the cutting groove, the other end is rotatably connected with a guide block, the guide block is slidingly connected with the inner side wall of the cutting groove, and the upper end of the guide block is fixedly connected with a of spines.

Preferably, the fixing device includes a sleeve column located outside the catheter, the upper end of the sleeve column is fixedly connected with a rubber block, the outside of the sleeve column is sleeved with a limit ring, and the outer wall of the rubber block is provided with a Constraining slots cooperating with the limiting ring.

Preferably, the lower end of the column is fixedly connected with a first rubber pad, and both ends of the first rubber pad are provided with elastic bands, one end of one of the elastic bands is fixedly connected with the first rubber pad, One end of the other elastic band is fixedly connected with a hook that cooperates with the first rubber pad, and a second rubber pad is fixedly connected between the two elastic bands.

Preferably, a square hole is opened in the middle of the elastic band, and ventilation holes are opened on both sides of the square hole in the elastic band.

Preferably, a mounting hole is opened in the middle of the second rubber pad, a plurality of anti-slip pads are fixedly connected to the inner side wall of the second rubber pad, and corrugated grooves are opened on the anti-slip pad.

Preferably, the pair of outer side walls of the elastic bands are fixedly connected with Velcro that cooperates with each other.

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

In the above scheme, by setting the contact piece and the socket piece, the interstitial fluid at the cross-shaped groove on the contact piece is slowly drained into the catheter through the hole on the connecting edge, and the connecting edge is located in the rubber surface, so as to avoid the hole from being in contact with the patient’s skin. Direct contact to avoid the catheter being adsorbed to the tissue of the human body, affecting the drainage effect of the catheter on the interstitial fluid, and also increasing the pain of the patient. The support plate increases the stability around the inner retaining ring, and at the same time works with the negative pressure film when the drainage ball is working. Cooperate with each other to guide the interstitial fluid flowing out from the outer end of the cross-shaped groove. The top of the inner ring on the sleeve is inclined inward. The inner inclined inner ring facilitates the insertion of the end of the catheter into the inner ring. The upper end of the inner ring There are two weakened holes. When the inner wall of the catheter is inserted along the outer wall of the inner ring, the two weakened holes facilitate the inner ring to be squeezed inward, which is helpful for the user to insert the catheter to the outside of the inner ring. There is a weakening groove on the periphery of the side. When the user moves the side outward by hand, the side cooperates with the weakening groove and the notch to facilitate turning the side to the periphery of the contact piece and shield the contact piece. The role of dust.

By setting the cut-off piece, when the user installs the shielding end and the conduit, the inner wall of the conduit and the outer wall of the inner ring are squeezed, and at the same time the conduit and the shielding end are screwed in by relative rotation. The rotating rod pushes downward, and at the same time tightens the negative pressure film between the catheter and the inner ring. After the rotating rod is pressed, it drives the guide block and the spines to move up along the cutting groove. Press the film to puncture. The whole installation process realizes that the negative pressure film is punctured when the catheter and the shielding end are installed. The catheter and the rubber surface are connected to each other. At the same time, the tensioned negative pressure film increases the fit. Prevent the seal at the fracture of the negative pressure film from being tight, which will affect the effect of negative pressure drainage, and avoid cutting the negative pressure film with scissors and then passing the catheter through the negative pressure film, which increases the convenience of operation and saves the time spent in field battles .

By setting the mutual cooperation between the first rubber pad, the second rubber pad and the two elastic bands, it is convenient to be directly tied to the arms or legs during field battles, and the installation hole is convenient for the user to extend the conduit from the installation hole. Install the catheter, the negative pressure film and the shielding end to each other. After the installation, the shielding end is retracted into the sleeve, which is convenient for preparing equipment in advance and quickly using it in the field. The two Velcro sticks are attached to each other to facilitate the installation hole. Blocking, while reducing external dust sticking to the blocking end, when it needs to be used in field battles, it is only necessary to separate the Velcro, and after the stretching hook wraps around the patient's arm or leg for a week, it is locked with the first rubber pad, that is, Drainage balls can be used for negative pressure drainage, which is more suitable for field operations.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the embodiments of the disclosure and together with the description serve to further explain the principles of the disclosure and to enable those skilled in the relevant art to make and use the disclosure.

Fig. 1 is a three-dimensional structural schematic diagram of a negative pressure drainage device for field use;

Fig. 2 is a schematic diagram of the three-dimensional structure of the section of the first rubber pad and the fixing device of the negative pressure drainage device for field use;

Fig. 3 is the three-dimensional structural schematic diagram of the anti-skid pad of the negative pressure drainage device for field operations;

Fig. 4 is a partially cut-away three-dimensional structural schematic diagram of the first rubber pad, fixing device and catheter of the negative pressure drainage device for field operations;

Fig. 5 is a schematic diagram of the three-dimensional structure of the shielding end of the negative pressure drainage device for field use;

Fig. 6 is a schematic diagram of the three-dimensional structure of the shielding end of the negative pressure drainage device for field use;

Fig. 7 is a schematic diagram of a partial section three-dimensional structure of a cutting device of a negative pressure drainage device for field use;

Fig. 8 is a three-dimensional structural schematic diagram of the cooperation between the shielding end and the catheter of the negative pressure drainage device for field use;

FIG. 9 is a schematic diagram of an enlarged three-dimensional structure at point A in FIG. 8 .

[reference sign]

1. The first rubber pad; 2. Fixing device; 201. Sleeve column; 202. Rubber block; 203. Constraint groove; 204. Limit ring; 3. Catheter; 4. Drainage ball; 5. Elastic band; 6. The first Two rubber pads; 7. Anti-skid pads; 8. Corrugated grooves; 9. Mounting holes; 10. Ventilation holes; 11. Hooks; 12. Velcro; 13. Blocking ends; 14. Low rings; 16. Inner ring; 17. Inner retaining ring; 18. Liquid hole; 19. Support plate; 20. Rubber surface; 21. Connecting edge; 22. Rotating rod; 23. Cutting groove; 24. Fixed column; 25. Guide block; 26, spines; 27, negative pressure film.

As shown in the figure, in order to clearly realize the structure of the embodiment of the present invention, specific structures and devices are marked in the figures, but this is only for illustrative purposes, and is not intended to limit the present invention to the specific structures, devices and environments According to specific needs, those skilled in the art can adjust or modify these devices and environments, and the adjustments or modifications are still included in the scope of the appended claims.

Detailed ways

A field negative pressure drainage device provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also adopt other alternative ways to implement for some known technologies; and the accompanying drawings It is only for more specific description of the embodiments, but not intended to specifically limit the present invention.

It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include particular features, structures, or characteristics, but Not every embodiment may include that particular feature, structure or characteristic. In addition, when a particular feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of those skilled in the relevant art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

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

It will be appreciated that the meanings of "on", "over" and "above" in this disclosure should be read in the broadest possible manner such that "on" means not only "Directly on" something also includes the meaning of "on" something with an intervening feature or layer in between, and "on" or "over" not only means "on" something The meaning of "on" or "over" and may also include its meaning of "on" or "over" something without intervening features or layers in between.

In addition, spatial relative terms such as "under", "beneath", "lower", "above", "upper", etc. may be used herein for convenience of description to describe the relationship between one element or feature and another. The relationship of one or more elements or features as shown in the 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 figures. A device may be otherwise oriented and spatially relative descriptors used herein similarly interpreted accordingly.

As shown in Figures 1 and 2, an embodiment of the present invention provides a negative pressure drainage device for field use, including: a catheter 3, one end of the catheter 3 is sleeved with a drainage ball 4, and the other end of the catheter 3 is connected to the other end of the catheter 3. Connected with a shielding end 13, the shielding end 13 is used to contact the patient's skin, and through the action of the drainage ball 4, negative pressure is generated to absorb the tissue fluid flowing out of the patient's wound. The drainage ball 4 is mainly composed of a ball, a cover, and a drain pipe Joint, a lock nut, a one-way valve and an auxiliary belt. After the drainage ball 4 is pressed, the air in the drainage ball 4 is discharged. During recovery from extrusion and collapse, the negative pressure drainage ball can provide more than 10kPa The negative pressure makes one end of the catheter 3 drain the interstitial fluid in the patient's wound, which belongs to the prior art.

As shown in Fig. 5, Fig. 6 and Fig. 8, the shielding terminal 13 includes a connected contact piece and a socket piece, the contact piece includes a low ring 14 connected with the socket piece, and the inner side wall of the low ring 14 is fixedly connected with The inner retaining ring 17 in the form of a vortex ring, the inner retaining ring 17 in the shape of a vortex ring reduces the area at the port of the catheter 3, thereby increasing the negative pressure for absorbing tissue fluid, the bottom end of the inner retaining ring 17 is fixedly connected with a rubber surface 20, the rubber The surface 20 is provided with a cross-shaped groove, and the side wall of the cross-shaped groove is fixedly connected to the side of the inner retaining ring 17 with a connecting edge 21 with a hole. When the rubber surface 20 is close to the skin of the patient's wound , the rubber surface 20 is deformed, and the tissue fluid flows along the rubber surface 20 to the cross-shaped groove. At this time, through the function of the drainage ball 4, the tissue fluid at the cross-shaped groove is slowly drained into the catheter 3 through the hole on the connecting edge 21, The connecting edge 21 is located in the rubber surface 20, so as to avoid direct contact between the hole and the patient's skin. wall and is located at each liquid hole 18 and is fixedly connected with a pair of support plates 19. The inner retaining ring 17 and the rubber surface 20 form an inverted mushroom shape, and the support plates 19 increase the stability around the inner retaining ring 17, and at the same time The interstitial fluid flowing out from the outer end of the cross-shaped groove acts as a guide to promote the inhalation of interstitial fluid from the liquid hole 18. The sleeve includes an inner ring 16 and a side edge 15 fixedly connected to the inner edge and outer edge of the lower ring 14 respectively. The inner side wall of the side 15 is fixedly connected with a plurality of protrusions, the outer side wall of the inner ring 16 is provided with a plurality of grooves suitable for the protrusions, and the side wall of the conduit 3 is sleeved between the inner ring 16 and the side 15 , the top of the inner ring 16 is inclined inwardly. The inner ring 16 inclined inwardly facilitates the insertion of the end of the catheter 3 into the inner ring 16. The upper end of the inner ring 16 is provided with two weakened holes. When the outer wall of 16 is inserted, the two weakened holes facilitate the inner ring 16 to be squeezed inward, which is helpful for the user to insert the catheter 3 to the outside of the inner ring 16, and there are gaps on the opposite sides of the side 15, The side 15 can be flipped along the two sides of the low ring 14, and the periphery of the side 15 is provided with a weakening groove. When the user moves the side 15 outward by hand, the side 15 cooperates with the weakening groove and the gap. It is convenient to turn the side edge 15 to the periphery of the contact piece, and play the role of blocking dust on the contact piece. At this time, it is in the state of not matching the conduit 3 at the beginning, and the inner stop ring 17, the lower ring 14, the inner ring 16 and the support plate 19 are all made of PVC material, which has a supporting effect, and side 15 is made of rubber material, which is easy to turn over.

By arranging the contact piece and the socket piece, the interstitial fluid at the cross-shaped groove on the contact piece is slowly drained into the catheter 3 through the hole on the connecting edge 21, and the connecting edge 21 is located in the rubber surface 20, thereby avoiding contact between the hole and the patient's skin Direct contact avoids the catheter 3 being adsorbed to the tissue of the human body, which affects the drainage effect of the catheter 3 on the interstitial fluid, and also increases the pain of the patient. Cooperate with each other to guide the interstitial fluid flowing out from the outer end of the cross-shaped groove. The top of the inner ring 16 on the socket is inclined inward, and the inner ring 16 inclined inward facilitates the insertion of the end of the catheter 3 into the inner ring 16. The upper end of the inner ring 16 is provided with two weakened holes. When the inner wall of the catheter 3 is inserted along the outer wall of the inner ring 16, the two weakened holes facilitate the inner ring 16 to be squeezed inward, which helps the user to put the catheter 3 is inserted into the outside of the inner ring 16, and a weakening groove is provided on the periphery of the side 15. When the user moves the side 15 outward by hand, the side 15 cooperates with the weakening groove and the gap to facilitate the side 15 is flipped to the periphery of the contact piece, which plays a role of blocking dust on the contact piece.

As shown in Figures 7 to 9, the shielding end 13 also includes a plurality of cutting pieces connected to the upper end of the inner ring 16, the cutting pieces are used to cut off the negative pressure film 27, and make the conduit 3 communicate with the contact piece, each The cutting part comprises an L-shaped cutting groove 23 which is opened inside the inner ring 16. The inner side wall of the cutting groove 23 is fixedly connected with a fixed post 24, and the outer side wall of the fixed post 24 is rotatably connected with a rotating rod 22, and one end of the rotating rod 22 Stretch out the outside of the cutting groove 23, the other end is rotatably connected with a guide block 25, the guide block 25 is slidably connected with the inner side wall of the cutting groove 23, and the upper end of the guide block 25 is fixedly connected with a thorn piece 26 located in the cutting groove 23. Hold the end of the catheter 3 and the negative pressure film 27 with your hands, and when one end of the catheter 3 is in contact with the negative pressure film 27, grab the side 15 that blocks the end 13 with the other hand, and slowly move one end of the catheter 3 to the negative pressure film 27. Squeeze slowly into the inner ring 16, and slowly rotate the shielding end 13 by hand while squeezing. At this time, the negative pressure film 27 in the catheter 3 is slowly tightened. One end is pressed, and the pressed rotating rod 22 rotates around the fixed column 24, and the rotation of the fixed column 24 drives the guide block 25 to move up along the cutting groove 23, and then the stab piece 26 is moved out of the cutting groove 23, and the negative pressure is applied when the stab piece 26 moves out. The film 27 is punctured to realize the communication between the catheter 3 and the contact piece, which is convenient for subsequent negative pressure drainage. When the catheter 3 is squeezed to the periphery of the inner ring 16, the side 15 is turned up by hand, and the convex side of the side 15 The raised part squeezes the side wall of the conduit 3 into the groove of the inner ring 16, increases the friction of the side 15 against the outer wall of the conduit 3, and increases the stability during installation. The sealing effect between the catheters 3 prevents tissue fluid from leaking out.

By setting the cut-off piece, when the user installs the shielding end 13 and the conduit 3, the inner side wall of the conduit 3 and the outer wall of the inner ring 16 are squeezed, and at the same time the conduit 3 and the shielding end 13 are relatively rotated. screwed in, the catheter 3 pushes the rotating rod 22 downward, and at the same time tightens the negative pressure film 27 between the catheter 3 and the inner ring 16, and the rotating rod 22 drives the guide block 25 and the spines 26 along the As the cutting groove 23 moves up, the stab piece 26 punctures the tensioned negative pressure film 27. The whole installation process realizes that the negative pressure film 27 is punctured when the conduit 3 and the shielding end 13 are installed, and the conduit 3 and the shielding end 13 are installed. The rubber surfaces 20 are connected to each other, and at the same time, the tensioned negative pressure film 27 increases the degree of fit, preventing the negative pressure film 27 from being tightly sealed at the fracture, which affects the effect of negative pressure drainage, and avoids cutting the negative pressure film 27 with scissors Finally, the catheter 3 is passed through the negative pressure film 27, which increases the convenience of operation and saves the time spent in field operations.

As shown in Fig. 2 and Fig. 4, the outside of the catheter 3 is provided with a fixing device 2 that restricts the drawing of the catheter 3. The fixing device 2 includes a sleeve 201 located outside the catheter 3, and the upper end of the sleeve 201 is fixedly connected with a rubber block 202. The outside of the sleeve 201 is sleeved with a limit ring 204, and the outer wall of the rubber block 202 is provided with a constraint groove 203 that cooperates with the limit ring 204. When the user moves the limit ring 204 upward with his hand, the limit ring 204 Slowly move into the constraint groove 203, because the inner side wall of the rubber block 202 has a weakening groove, the rubber block 202 moves toward the side of the catheter 3 after being squeezed by the limiting ring 204, and then squeezes the outer side wall of the catheter 3 , to prevent the catheter 3 from twitching back and forth, the inner side wall of the rubber block 202 is provided with a plurality of annular grooves, which increases the deformation of the rubber block 202, and the rope can also be placed in the restraining groove 203 to tighten slowly during field battles, thereby Restrict the back and forth drawing of catheter 3.

As shown in Figures 1 and 2, the lower end of the sleeve 201 is fixedly connected with a first rubber pad 1, and elastic bands 5 are arranged at both ends of the first rubber pad 1, and one end of one of the elastic bands 5 is connected to the first rubber pad. 1 is fixedly connected, and one end of the other elastic band 5 is fixedly connected with a hook 11 that cooperates with the first rubber pad 1, and a second rubber pad 6 is fixedly connected between the two elastic bands 5, through the first rubber pad 1, The mutual cooperation between the second rubber pad 6 and the two elastic bands 5 is convenient to be directly tied to the arms or legs during field battles. The middle part of the elastic band 5 is provided with a square hole, and the elastic band 5 is positioned at both sides of the square hole and all opened. Ventilation hole 10 is arranged, saves the use of material, has also increased ventilating effect simultaneously, and the middle part of second rubber pad 6 is provided with installation hole 9, and installation hole 9 is convenient for the user to stretch out conduit 3 from installation hole 9, after stretching out, will Conduit 3, negative pressure film 27 and shielding end 13 are mutually installed, and after installation, by pulling conduit 3, shielding end 13 is moved into sleeve column 201, and is used rapidly in the field, and the inner side wall of second rubber pad 6 A plurality of anti-slip mats 7 are fixedly connected, and the anti-slip mats 7 are provided with corrugated grooves 8. The corrugated grooves 8 increase the friction with the patient's arms or legs. , the two magic stickers 12 are adhered to each other, which is convenient to cover the installation hole 9, reduces the dust from the outside to stick to the cover end 13, and is convenient for preparing equipment in advance for carrying in field operations.

By setting the mutual cooperation between the first rubber pad 1, the second rubber pad 6 and the two elastic bands 5, it is convenient to be directly tied to the arms or legs in the field, and the installation hole 9 is convenient for the user to install the conduit 3 from the installation hole 9 Stretch out, install the catheter 3, the negative pressure film 27 and the shielding end 13 mutually after stretching out, and the shielding end 13 after installation is retracted in the sleeve column 201, which is convenient for preparing equipment in advance, and can be used quickly in the field. The two velcros 12 are mutually adhered, which is convenient for covering the installation hole 9, and at the same time reduces the external dust sticking to the shielding end 13. When it needs to be used in field battles, only the velcro 12 needs to be separated, and the stretching hook 11 surrounds the patient's body. After the arm or leg is clamped with the first rubber pad 1 one week later, the drainage ball 4 can be used for negative pressure drainage, which is more suitable for field battles.

In the technical solution provided by the present invention, by setting the contact piece and the socket piece, the interstitial fluid at the cross-shaped groove on the contact piece is slowly drained into the catheter through the hole on the connecting edge, and the connecting edge is located in the rubber surface, thereby avoiding the hole and The patient's skin is directly in contact with the patient's skin to prevent the catheter from being adsorbed to the tissue of the human body, which will affect the drainage effect of the catheter on the interstitial fluid, and also increase the patient's pain. The mutual cooperation of the pressing film guides the tissue fluid flowing out from the outer end of the cross-shaped groove. The top of the inner ring on the socket is inclined inward, and the inner ring inclined inward facilitates the insertion of the end of the catheter into the inner ring. There are two weakened holes on the upper end of the ring. When the inner wall of the catheter is inserted along the outer wall of the inner ring, the two weakened holes facilitate the inner ring to be squeezed inward, which is helpful for the user to insert the catheter into the inner ring. There is a weakening groove on the outer periphery of the side. When the user moves the side outward by hand, the side cooperates with the notch through the weakening groove to facilitate turning the side to the periphery of the contact piece. Play the role of blocking dust.

By setting the cut-off piece, when the user installs the shielding end and the conduit, the inner wall of the conduit and the outer wall of the inner ring are squeezed, and at the same time the conduit and the shielding end are screwed in by relative rotation. The rotating rod pushes downward, and at the same time tightens the negative pressure film between the catheter and the inner ring. After the rotating rod is pressed, it drives the guide block and the spines to move up along the cutting groove. Press the film to puncture. The whole installation process realizes that the negative pressure film is punctured when the catheter and the shielding end are installed. The catheter and the rubber surface are connected to each other. At the same time, the tensioned negative pressure film increases the fit. Prevent the seal at the fracture of the negative pressure film from being tight, which will affect the effect of negative pressure drainage, and avoid cutting the negative pressure film with scissors and then passing the catheter through the negative pressure film, which increases the convenience of operation and saves the time spent in field battles .

By setting the mutual cooperation between the first rubber pad, the second rubber pad and the two elastic bands, it is convenient to be directly tied to the arms or legs during field battles, and the installation hole is convenient for the user to extend the conduit from the installation hole. Install the catheter, the negative pressure film and the shielding end to each other. After the installation, the shielding end is retracted into the sleeve, which is convenient for preparing equipment in advance and quickly using it in the field. The two Velcro sticks are attached to each other to facilitate the installation hole. Blocking, while reducing external dust sticking to the blocking end, when it needs to be used in field battles, it is only necessary to separate the Velcro, and after the stretching hook wraps around the patient's arm or leg for a week, it is locked with the first rubber pad, that is, Drainage balls can be used for negative pressure drainage, which is more suitable for field operations.

The present invention covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the present invention. In order to provide the public with a thorough understanding of the present invention, specific details have been set forth in the above preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, well-known methods, procedures, procedures, components, circuits, etc. have not been described in detail in order to avoid unnecessary confusion to the essence of the present invention.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as: ROM/RAM, magnetic disk, etc. Discs, discs, etc.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (9)

1. A negative pressure drainage device for field use, comprising: a catheter, characterized in that, one end of the catheter is sleeved with a drainage ball, and the other end of the catheter is connected with a blocking end, and the blocking end is used for Contact the patient's skin, and generate negative pressure through the action of the drainage ball to absorb the tissue fluid flowing out of the patient's wound; The shielding end includes a connected contact piece and a socket. The contact piece includes a low ring connected to the socket. The bottom end of the inner retaining ring is fixedly connected with a rubber surface, and the rubber surface is provided with a cross-shaped groove, and the side wall of the cross-shaped groove is fixedly connected with a rubber surface facing the side of the inner retaining ring. The connecting edge of the hole, the sleeve is connected to the conduit; The outside of the catheter is provided with a fixing device that limits the drawing of the catheter. 2. The negative pressure drainage device for field use according to claim 1, wherein the outer wall of the inner retaining ring is provided with a plurality of liquid holes, and the outer wall of the inner retaining ring is located on each of the A pair of support plates are fixedly connected to the liquid passage holes. 3. The negative pressure drainage device for field use according to claim 1, characterized in that, the sleeve comprises an inner ring and a side which are respectively fixedly connected to the inner and outer edges of the low ring, and the side The inner side wall of the pipe is fixedly connected with a plurality of protrusions, the outer side wall of the inner ring is provided with a plurality of grooves suitable for the protrusions, and the side wall of the conduit is sleeved between the inner ring and the side In between, the top end of the inner ring is inclined inwardly, gaps are opened on opposite sides of the side, and the side can be flipped along the two sides of the low ring. 4. The negative pressure drainage device for field use according to claim 3, wherein the shielding end further includes a plurality of cutting pieces connected to the upper end of the inner ring, and the cutting pieces are used to cut off the negative pressure. film, and make the conduit communicate with the contact piece, each of the cutting pieces includes an L-shaped cutting groove opened inside the inner ring, and the inner side wall of the cutting groove is fixedly connected with a fixing column , the outer side wall of the fixed column is rotatably connected with a rotating rod, one end of the rotating rod protrudes from the outside of the cutting groove, and the other end is rotatably connected with a guide block, and the guide block slides with the inner side wall of the cutting groove connected, the upper end of the guide block is fixedly connected with a thorn piece located in the cutting groove. 5. The negative pressure drainage device for field use according to claim 1, wherein the fixing device comprises a sleeve outside the catheter, the upper end of the sleeve is fixedly connected with a rubber block, and the sleeve A limit ring is sheathed on the outside of the rubber block, and a constraint groove cooperating with the limit ring is provided on the outer wall of the rubber block. 6. The negative pressure drainage device for field use according to claim 5, characterized in that, the lower end of the sleeve column is fixedly connected with a first rubber pad, and elastic bands are arranged at both ends of the first rubber pad, wherein One end of one of the elastic bands is fixedly connected to the first rubber pad, and one end of the other elastic band is fixedly connected to a hook that cooperates with the first rubber pad, and the two elastic bands are fixed between each other. A second rubber pad is attached. 7 . The negative pressure drainage device for field use according to claim 6 , wherein a square hole is opened in the middle of the elastic band, and ventilation holes are opened on both sides of the elastic band at the square hole. 8 . 8. The negative pressure drainage device for field use according to claim 6, characterized in that, the middle part of the second rubber pad is provided with an installation hole, and the inner side wall of the second rubber pad is fixedly connected with a plurality of anti-skid pads, Corrugated grooves are opened on the anti-skid pad. 9. The negative pressure drainage device for field use according to claim 6, characterized in that, the outer sidewalls of the pair of elastic bands are fixedly connected with Velcro that cooperates with each other.

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