System and method for treating seepage at wound of indwelling drainage tube

Abstract

The invention relates to the field of medical equipment, and discloses a seepage treatment system and method for a wound of an indwelling drainage tube.The system comprises negative pressure equipment, the liquid outlet end of the negative pressure equipment is connected with a collecting bag, the liquid inlet end of the negative pressure equipment is connected with a collecting tube, a positioning patch is arranged at the end of the collecting tube, a mounting base is mounted on the positioning patch, and a penetrating opening is formed in the mounting base; a drainage tube penetrates through the collecting tube, a seepage cavity is formed in the mounting seat, a through hole is formed in the surface of the mounting seat, a protruding tube wall protruding towards the side away from the wound is formed at the end, close to the wound, of the collecting tube, the protruding tube wall can make contact with the epidermis of the wound to form a seepage gap, and a liquid through hole is formed in the protruding tube wall. A locking piece is arranged between the penetrating opening and the collecting pipe. In the invention, the locking piece is utilized to enable the drainage tube to remain at the wound in a state of directly facing and fitting the wound, so that the problem of excessive outflow of seepage caused by an overlarge gap between the drainage tube and the wound and slippage of the drainage tube is avoided, outflow of the seepage is reduced, and wound infection is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a system and method for treating exudate at a wound with an indwelling drainage tube. Background Art

[0002] Cancer patients will produce a large amount of ascites during the course of the disease and after surgical abdominal surgery. The ascites is drained to the body by placing an abdominal drainage tube. Since sinuses are formed after the abdominal catheter is placed, body fluids often seep out from the abdominal wall drainage port along the wall of the drainage tube during drainage. Clinically, sterile gauze is generally used to treat the exudate around the abdominal drainage tube. When the gauze is soaked and replaced, when a large amount of drainage fluid seeps out, it will contaminate the wound dressing, increase the risk of skin infection around the wound, and increase the patient's discomfort.

[0003] In this regard, a wound negative pressure aspirator can be used in clinical medicine to treat wound exudate. The wound can be sealed by combining a drainage tray with medical patches and gauze to fit the wound. A negative pressure environment can be formed by combining a drainage tube and a drainage ball. When exudate appears in the patient's wound, the exudate can be sucked into the drainage ball through the drainage hole of the drainage tray, thereby extracting the wound exudate.

[0004] In the prior art, the method of forming negative pressure on the wound surface not only extracts exudate from the wound, but also causes the exudate in the wound to flow out, resulting in excessive exudate extravasation, causing the abdominal drainage tube to slip and the wound to aggravate the exudate extravasation. In addition, if the abdominal drainage tube extends outward in a direction inclined to the skin surface, a larger gap will be generated between the drainage tube wall and the wound, which will also cause a large amount of exudate to flow out, increasing the possibility of wound surface infection. Summary of the invention

[0005] To this end, the present invention provides a system and method for treating exudate at a wound with an indwelling drainage tube, which effectively solves the technical problems in the prior art that negative pressure extraction causes the abdominal drainage tube to slip off the wound, the tilt of the abdominal drainage tube causes excessive outflow of exudate, and the increased possibility of wound surface infection.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a system for treating exudate at a wound with an indwelling drainage tube, comprising a negative pressure device, wherein the liquid outlet end of the negative pressure device is connected to a collection bag, and the liquid inlet end thereof is connected to a collection tube;

[0007] The end of the collecting tube is provided with a positioning sticker, a mounting seat is installed on the positioning sticker, a through hole is opened on the mounting seat, the through hole is directly opposite to the wound, the collecting tube passes through the through hole, and a drainage tube is penetrated on the collecting tube;

[0008] The mounting seat is opened toward the wound side to form a liquid seepage cavity that is closed on all sides, and a through hole is provided on the surface of the mounting seat, and the liquid seepage cavity is connected to the outside through the through hole;

[0009] The end of the collecting tube close to the wound forms a convex tube wall that bulges toward the side away from the wound, and the convex tube wall can contact the wound epidermis and form an exudate gap. A liquid through hole is provided on the convex tube wall, and the collecting tube is connected with the exudate gap and the exudate cavity through the liquid through hole.

[0010] Adjusting the position of the raised tube wall relative to the wound by adjusting the position of the collecting tube relative to the through-hole;

[0011] A locking piece is provided between the through-port and the collecting tube. After the position of the collecting tube is adjusted, the collecting tube is locked at the through-port by using the locking piece.

[0012] Furthermore, the distance between the outer edge of the raised tube wall and the through-hole is greater than the distance between the inner edge of the raised tube wall and the through-hole;

[0013] The outer edge of the raised tube wall is provided with a through hole in the horizontal direction, and the seepage gap is connected with the seepage cavity through the through hole.

[0014] Further, the locking member comprises a threaded sleeve disposed between the through-port and the collecting pipe;

[0015] The outer wall of the threaded sleeve is provided with an external thread, and the inner wall thereof is provided with an internal thread. The threaded sleeve is assembled in the through-hole via the external thread, and the outer wall of the collecting pipe is threadably matched with the internal thread.

[0016] Further, the locking member includes a first sleeve connected to the through-hole and a second sleeve threadedly assembled in the through-hole;

[0017] The first sleeve is upwardly open, the second sleeve is downwardly open, a conical wall is formed on the inner wall of the second sleeve, a conical cylinder is arranged between the conical wall and the first sleeve, the collecting pipe passes through the first sleeve, the second sleeve, the conical wall, and the conical cylinder, and a buffer spring is arranged between the conical cylinder and the first sleeve;

[0018] The conical cylinder wall is provided with a curved groove, a steel ball is installed in the curved groove, the outer wall of the collecting tube is provided with an annular wall groove, and the outer wall of the steel ball can be inserted into the annular wall groove;

[0019] Wherein, the inner diameter of the end of the conical wall body away from the wound is smaller than the inner diameter of the end of the conical wall body close to the wound.

[0020] Furthermore, the collecting pipe comprises a first pipe section and a second pipe section which are sequentially connected from top to bottom;

[0021] The end of the second pipe section is threadedly assembled in the first pipe section, and the annular wall groove is provided in the first pipe section;

[0022] A limiting block is provided on the inner wall of the first sleeve, and a vertical groove is provided on the outer wall of the second pipe section. The limiting block is slidably arranged in the vertical groove.

[0023] Further, the mounting seat comprises an outer ring seat mounted on the positioning sticker and a snap ring mounted on the outer ring seat;

[0024] The outer ring seat is provided with a sleeve seat, and the sleeve seat is clamped on the clamp ring;

[0025] Wherein, the through hole and the through opening are both arranged on the sleeve.

[0026] Furthermore, an annular airbag is provided at the bottom of the outer ring seat, and the annular airbag is in contact with the skin surface.

[0027] Furthermore, a center hole is formed in the center of the positioning sticker, an annular groove is formed in the inner edge of the center hole, and the edge of the mounting seat is fixed on the annular groove;

[0028] The depth of the annular groove is less than the thickness of the positioning sticker.

[0029] Furthermore, a connecting pipe is connected to the outer wall of the collecting pipe, and the collecting pipe is connected to the negative pressure device through the connecting pipe.

[0030] In order to solve the above technical problems, the present invention further provides the following technical solutions: a method for treating exudate in a wound exudate treatment system with an indwelling drainage tube, comprising the following steps:

[0031] Align the penetration port to the wound and attach the positioning patch to the epidermis around the wound;

[0032] Insert a drainage tube into the wound and simultaneously place the collection tube directly against the wound;

[0033] Adjust the position of the collection tube relative to the wound according to the exudate level of the wound;

[0034] The collecting tube is locked at the through-hole by using a locking member to limit the fixed state of the collecting tube and the drainage tube relative to the wound, so that the drainage tube is left at the wound in a state of facing and fitting the wound;

[0035] The exudate from the wound is collected through a collection tube.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] In the present invention, the through opening is directly opposite to the wound, and the collecting tube is locked in the direction and position directly opposite to the wound by using a locking member, so that the drainage tube is retained at the wound in a state of directly opposite to and fitting the wound, thereby avoiding the problem of excessive outflow of exudate due to excessive gap between the drainage tube and the wound and slippage of the drainage tube, thereby reducing outflow of exudate and avoiding wound infection.

[0038] The exudate cavity is connected to the outside world. Under the action of air pressure, the exudate flowing out of the wound into the exudate cavity is more easily drawn into the collection tube through the liquid hole, thereby avoiding the problem of excessive outflow of exudate caused by drawing out the exudate inside the wound, and reducing the wound infection.

[0039] Furthermore, the position of the raised tube wall relative to the wound is adjustable. If the wound exudates too much, the raised tube wall is moved away from the wound, and the exudate flows into the exudate cavity and then is extracted, so as to avoid the exudate accumulating in the wound and causing infection. If the wound exudates less, the raised tube wall is placed in close contact with the epidermis around the wound, and the exudate flows into the exudate gap and is directly extracted, which can reduce the contact of the exudate with other skin parts and reduce the possibility of infection of the surrounding skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0041] Figure 1 A schematic structural diagram of a locking member using the first embodiment in a system for treating exudate at a wound with an indwelling drainage tube provided by an embodiment of the present invention;

[0042] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0043] Figure 3 for Figure 2 Plane section view along the AA direction;

[0044] Figure 4 for Figure 2 Stereoscopic cross-sectional view along the AA axis;

[0045] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective;

[0046] Figure 6 for Figure 4 An enlarged structural diagram of the middle locking member, the mounting seat, and the collecting tube;

[0047] Figure 7 for Figure 6 A is a schematic diagram of the enlarged structure of the middle part;

[0048] Figure 8 A schematic structural diagram of a locking member using the second embodiment in a system for treating exudate at a wound with an indwelling drainage tube provided by an embodiment of the present invention;

[0049] Fig. 9 for Figure 8 A schematic diagram of a top view structure;

[0050] Fig.10 for Fig. 9 Plane section view along the BB direction;

[0051] Fig.11 for Fig.10 Schematic diagram of the enlarged structure;

[0052] Fig.12 for Fig.10 A three-dimensional cross-sectional view of the middle locking part and the collecting tube along the BB direction.

[0053] The numbers in the figure represent the following:

[0054] 1. Positioning sticker; 2. Through hole; 3. Drainage tube; 4. Mounting seat; 5. Collection tube; 6. Seepage cavity; 7. Through hole; 8. Raised tube wall; 9. Seepage gap; 10. Through hole; 11. Locking piece; 12. Perforation; 13. Annular airbag; 14. Center hole; 15. Annular groove; 16. Connecting tube;

[0055] 41. Outer ring seat; 42. Snap ring; 43. Sleeve seat;

[0056] 51. first pipe section; 52. second pipe section; 53. limit block; 54. vertical groove;

[0057] 111. threaded sleeve; 112. first sleeve; 113. second sleeve; 114. conical wall; 115. conical cylinder; 116. buffer spring; 117. curved groove; 118. steel ball; 119. annular wall groove. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] like Figure 1 , Figure 8As shown, the present invention provides an exudate treatment system for a wound with an indwelling drainage tube, including a negative pressure device, wherein the liquid outlet end of the negative pressure device is connected to a collecting bag, and the liquid inlet end thereof is connected to a collecting tube 5. The negative pressure device adopts a commonly used medical negative pressure extraction device, and utilizes the negative pressure device to extract gas in the collecting tube 5, so that the collecting tube 5 is under negative pressure, and the exudate is extracted into the collecting tube 5 under negative pressure. The outer wall of the collecting tube 5 is connected to a connecting tube 16, and the collecting tube 5 is connected to the negative pressure device through the connecting tube 16, and the exudate enters the collecting bag through the collecting tube 5 and the connecting tube 16.

[0060] A positioning patch 1 is provided at the end of the collection tube 5, and the positioning patch 1 is attached around the patient's wound. A mounting seat 4 is installed on the positioning patch 1, and a through hole 2 is opened on the mounting seat 4. The through hole 2 is directly opposite to the wound. The collection tube 5 passes through the through hole 2, and a drainage tube 3 is penetrated on the collection tube 5.

[0061] The collecting tube 5 and the drainage tube 3 are an integrated structure. The collecting tube 5 moves along with the drainage tube 3. When the position of the collecting tube 5 is defined, the position of the drainage tube 3 is also defined.

[0062] like Figure 1 and Figure 3 As shown, the mounting seat 4 is opened toward the wound side to form a liquid seepage cavity 6 which is closed on all sides, and a through hole 7 is provided on the surface of the mounting seat 4, and the liquid seepage cavity 6 is connected with the outside through the through hole 7;

[0063] The end of the collecting tube 5 close to the wound forms a convex tube wall 8 that bulges toward the side away from the wound. The convex tube wall 8 can contact the wound epidermis and form a liquid seepage gap 9. A liquid through hole 10 is provided on the convex tube wall 8. The collecting tube 5 is connected with the liquid seepage gap 9 and the liquid seepage cavity 6 through the liquid through hole 10.

[0064] The position of the raised tube wall 8 relative to the wound is adjusted by adjusting the position of the collecting tube 5 relative to the through-hole 2;

[0065] A locking member 11 is provided between the through-port 2 and the collecting tube 5 . After the position of the collecting tube 5 is adjusted, the collecting tube 5 is locked at the through-port 2 by using the locking member 11 .

[0066] In the present invention, the through-port 2 is directly opposite to the wound, and the locking member 11 is used to lock the collecting tube 5 in the direction and position directly opposite to the wound, so that the drainage tube 3 is retained at the wound in a state directly opposite to and fitting the wound, thereby avoiding the problem of excessive outflow of exudate due to excessive gap between the drainage tube 3 and the wound and the drainage tube 3 slipping, thereby reducing the outflow of exudate and avoiding wound infection.

[0067] The exudate cavity 6 is connected to the outside. Under the action of air pressure, the exudate flowing out of the wound into the exudate cavity 6 is more easily drawn into the collecting tube 5 through the liquid hole 10, thereby avoiding the problem of excessive outflow of exudate caused by drawing out the exudate inside the wound, thereby reducing the risk of wound infection.

[0068] The position of the raised tube wall 8 relative to the wound is adjustable. If the wound exudates too much, the raised tube wall 8 is moved away from the wound, and the exudate flows into the exudate cavity 6 before being extracted, so as to avoid the exudate accumulating in the wound and causing infection. If the wound exudates less, the raised tube wall 8 is made close to the epidermis around the wound, and the exudate flows into the exudate gap 9 and is directly extracted, which can reduce the contact of the exudate with other skin parts and reduce the possibility of infection of the surrounding skin.

[0069] In order to form the seepage gap 9, it is necessary to make the distance between the outer edge of the raised tube wall 8 and the through-hole 2 greater than the distance between the inner edge of the raised tube wall 8 and the through-hole 2. The drainage tube 3 is generally arranged at the central axis position in the collecting tube 5. The central position of the raised tube wall 8 is for the drainage tube 3 to pass through, and the inner edge of the raised tube wall 8 is formed at the position where the drainage tube 3 passes through. That is to say, Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the inner edge of the raised tube wall 8 near the center position bulges upward. Such a design can ensure that when the outer edge of the raised tube wall 8 contacts the peripheral epidermis of the wound, the inner edge of the raised tube wall 8 is away from the wound, so that an exudate gap 9 is formed between it and the wound. The content of the exudate gap 9 is much smaller than the content of the exudate cavity 6.

[0070] If the exudate gap 9 is closed on all sides and not connected to the outside, since the negative pressure does not only act on the wound surface, when the exudate on the wound surface is extracted, it is very likely that the exudate inside the wound will be extracted at the same time, resulting in excessive outflow of the exudate. In this regard, it is necessary to connect the exudate gap 9 to the outside. Specifically, Figure 7 As shown, a perforation 12 is provided in the horizontal direction on the outer edge of the raised tube wall 8, and the exudate gap 9 is connected with the exudate cavity 6 through the perforation 12. When negative pressure is generated in the collecting tube 5, if the exudate inside the wound is to be extracted, it is necessary to resist the air pressure in the wound, and extracting the exudate in the exudate gap 9 will not cause the air pressure change in the exudate gap 9. Therefore, the exudate in the exudate gap 9 is easier to enter the collecting tube 5, so that the exudate inside the wound is not easy to be extracted, thereby avoiding excessive outflow of exudate.

[0071] In the present invention, the locking member 11 can limit the state of the collecting tube 5 on the through-hole 2 to fix the collecting tube 5 on the through-hole 2. The locking member 11 of the present invention adopts the following two embodiments:

[0072] First embodiment:

[0073] like Figure 4 , Figure 5 and Figure 6As shown, the locking member 11 includes a threaded sleeve 111 arranged between the through-port 2 and the collecting tube 5, the outer wall of the threaded sleeve 111 is provided with an external thread, and the inner wall thereof is provided with an internal thread, the threaded sleeve 111 is assembled in the through-port 2 via the external thread, and the outer wall of the collecting tube 5 cooperates with the internal thread.

[0074] During the actual assembly process, the drainage tube 3 is first placed into the wound, and the collecting tube 5 is also driven to a position corresponding to the wound. At this time, the collecting tube 5 is already in the through-port 2, so that the distance between the outer wall of the collecting tube 5 and the through-port 2 is equal everywhere, and then the threaded sleeve 111 is placed between the through-port 2 and the collecting tube 5, and the through-port 2 is installed between the collecting tube 5 in a spiral manner. During the process of spirally installing the threaded sleeve 111, the external thread cooperates with the through-port 2, and at the same time, the internal thread cooperates with the collecting tube 5.

[0075] If the position of the collecting tube 5 needs to be adjusted after assembly, the collecting tube 5 is rotated in a spiral manner, and the collecting tube 5 approaches the wound in a spiral manner, thereby adjusting the relative position of the collecting tube 5.

[0076] Second embodiment:

[0077] like Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the locking member 11 includes a first sleeve 112 connected to the through-hole 2 and a second sleeve 113 threadedly assembled in the through-hole 2;

[0078] The first sleeve 112 opens upward, and the second sleeve 113 opens downward. A conical wall 114 is formed on the inner wall of the second sleeve 113. A conical cylinder 115 is arranged between the conical wall 114 and the first sleeve 112. The collecting pipe 5 passes through the first sleeve 112, the second sleeve 113, the conical wall 114, and the conical cylinder 115. A buffer spring 116 is arranged between the conical cylinder 115 and the first sleeve 112. The conical cylinder 115 is only connected to the buffer spring 116 and is not connected to other structures.

[0079] A curved groove 117 is provided on the wall of the conical cylinder 115, a steel ball 118 is installed in the curved groove 117, and an annular wall groove 119 is provided on the outer wall of the collecting tube 5, and the outer wall of the steel ball 118 can be inserted into the annular wall groove 119;

[0080] The inner diameter of the conical wall 114 at the end away from the wound is smaller than the inner diameter of the conical wall 114 at the end close to the wound.

[0081] By default, the first sleeve 112 and the second sleeve 113 are close to each other in the initial state, but the position of the second sleeve 113 in the through-opening 2 can also be adjusted by moving the second sleeve 113 .

[0082] In the initial state, the collecting tube 5 has not been inserted into the through-hole 2. The collecting tube 5 is aligned with the holes and grooves on the first sleeve 112, the second sleeve 113, the conical wall 114, and the conical tube 115 and inserted. During the insertion process, the steel ball 118 is driven downward by the friction force of the tube wall of the collecting tube 5, and the steel ball 118 simultaneously drives the conical tube 115 downward, and the buffer spring 116 is compressed. After the conical tube 115 moves down a short distance, the inner side of the steel ball 118 just contacts the outer wall of the collecting tube 5, and the outer side just contacts the conical wall. 114 inner wall, at this time, the collecting tube 5 can no longer drive the steel ball 118 to move downward, and the collecting tube 5 can continue to move downward. When the annular wall groove 119 on the outer wall of the collecting tube 5 moves downward to close to the steel ball 118, a larger distance is formed between the annular wall groove 119 and the conical wall body 114. Under the action of the buffer spring 116, the conical cylinder 115 moves up a short distance, and the steel ball 118 is stuck in the annular wall groove 119. At this time, the inner side of the steel ball 118 just contacts the annular wall groove 119, and the outer side just contacts the inner wall of the conical wall body 114.

[0083] The annular wall groove 119 should also be designed into a shape that is convenient for the steel ball 118 to be inserted.

[0084] In order to prevent the steel ball 118 from slipping off the curved groove 117 and facilitate the movement of the steel ball 118 in the curved groove 117, the radius of the curved groove 117 is larger than the radius of the steel ball 118, and the width of the openings on both sides of the curved groove 117 must be smaller than the diameter of the steel ball 118, so that the steel ball 118 can not only move in the curved groove, but also cannot escape from the curved groove 117.

[0085] After the steel ball 118 is inserted into the annular wall groove 119, if it continues to move forward toward the wound side, it can continue to push the collecting tube 5 forward. After the position is adjusted, the inner side of the steel ball 118 contacts the wall of the collecting tube 5, and the friction between the steel ball 118 and the wall of the collecting tube 5 is used to position the collecting tube 5, and it can also prevent the collecting tube 5 from shifting. If it moves away from the wound side, it will drive the steel ball 118 to move together. At this time, the steel ball 118 will move away from the wound side and will move inward along the radial direction of the collecting tube 5 under the push of the conical wall body 114. The steel ball 118 has been inserted into the annular wall groove 119 and can no longer move inward along the radial direction. Therefore, the collecting tube 5 cannot move to the side away from the wound at this time, thereby realizing one-way locking of the collecting tube 5 and the drainage tube 3.

[0086] In the above embodiments, the one-way locking of the collecting tube 5 and the drainage tube 3 can ensure that the drainage tube 3 will not slip off the wound, and can further achieve position adjustment of the drainage tube 3 and the collecting tube 5.

[0087] If the collecting tube 5 and the drainage tube 3 are to be removed, it is necessary to release the one-way locking effect, push the second sleeve 113 toward the side away from the first sleeve 112, move the second sleeve 113 up a certain distance, and move the conical wall 114 up. At this time, the steel ball 118 is no longer in contact with the conical wall 114, and the conical wall 114 does not produce an inward supporting force on the steel ball 118. In the process of the collecting tube 5 moving up, the steel ball 118 may be pushed to move along the radius toward the outside of the curved groove 117, but it will not drive the steel ball 118 to move toward the side away from the wound, and the collecting tube 5 can be freely removed outward.

[0088] In the above embodiment, after the collecting tube 5 is locked, if the position of the collecting tube 5 is to be adjusted, the friction between the steel ball 118 and the collecting tube 5 can only be relied on to prevent the collecting tube 5 from moving. However, this positioning method is not very firm. In view of this, the present invention designs a retractable collecting tube 5. Specifically, as Fig.11 and Fig.12 As shown, the collecting pipe 5 includes a first pipe section 51 and a second pipe section 52 which are sequentially connected from top to bottom;

[0089] The end of the second pipe section 52 is threadedly assembled in the first pipe section 51, and the annular wall groove 119 is provided in the first pipe section 51;

[0090] A limit block 53 is disposed on the inner wall of the first sleeve 112 , and a vertical groove 54 is disposed on the outer wall of the second pipe section 52 . The limit block 53 is slidably disposed in the vertical groove 54 .

[0091] Under the limiting action of the limiting block 53, by moving the first tube segment 51, the second tube segment 52 will be driven to move in a direction away from or close to the first tube segment 51, and it is a linear movement, wherein the drainage tube 3 should be connected to the first tube segment 51, and the height position of the first tube segment 51 remains unchanged during the rotation process, and the position of the drainage tube 3 remains unchanged. When the second tube segment 52 is closer to the wound, the drainage tube 3 and the second tube segment 52 are in a relative motion state. When the second tube segment 52 is closer to the wound, the outer edge of the raised tube wall 8 can gradually contact the peripheral epidermis of the wound.

[0092] Under the above design, the end position of the collecting tube 5 can be adjusted by adjusting the position of the second tube section 52, and the position of the first tube section 51 in the locking member 11 remains unchanged. In this state, the entire collecting tube 5 is limited by the clamping action of the steel ball 118 and the annular wall groove 119, and the positioning effect is firm.

[0093] In the present invention, the mounting base 4 can be designed as a detachable structure, specifically, as Figure 6As shown, the mounting seat 4 includes an outer ring seat 41 mounted on the positioning sticker 1 and a retaining ring 42 mounted on the outer ring seat 41; a sleeve seat 43 is provided on the outer ring seat 41, and the sleeve seat 43 is engaged with the retaining ring 42; wherein the through hole 7 and the through opening 2 are both provided on the sleeve seat 43.

[0094] In the above embodiments, the sleeve 43 is detachable. In practical applications, the drainage tube 3 and the collecting tube 5 can be periodically removed, and the sleeve 43 can be removed to observe the wound condition. A transparent window can also be provided on the sleeve 43.

[0095] like Figure 6 As shown, an annular airbag 13 is arranged at the bottom of the outer ring seat 41, and the annular airbag 13 contacts the skin surface to form a closed cavity around the seepage cavity 6 to prevent the seepage from overflowing.

[0096] like Figure 5 As shown, a center hole 14 is opened in the center of the positioning sticker 1, and an annular groove 15 is opened on the inner edge of the center hole 14. The edge of the mounting seat 4 is fixed on the annular groove 15, and the depth of the annular groove 15 is less than the thickness of the positioning sticker 1.

[0097] The above design can make the area of ​​the positioning patch 1 large enough to ensure the device is positioned on the skin. In addition, since the depth of the annular groove 15 is less than the thickness of the positioning patch 1, the mounting seat 4 does not contact the skin surface, reducing the contact area between the skin surface and the device and improving the comfort of the device application.

[0098] The present invention also provides a method for treating exudate at a wound where a drainage tube 3 is placed, comprising the following steps:

[0099] Place the penetration port 2 directly against the wound, and attach the positioning patch 1 to the epidermis around the wound;

[0100] Insert the drainage tube 3 into the wound and simultaneously make the collection tube 5 face the wound;

[0101] adjusting the position of the collecting tube 5 relative to the wound according to the exudate situation of the wound;

[0102] The collecting tube 5 is locked at the through-hole 2 by using the locking member 11 to limit the fixing state of the collecting tube 5 and the drainage tube 3 relative to the wound, so that the drainage tube 3 is left at the wound in a state of facing and fitting the wound;

[0103] The exudate exuded from the wound is extracted through the collecting tube 5 .

[0104] The present invention mainly utilizes the locking member 11 to lock the collecting tube 5 in a direction and position facing the wound, so that the drainage tube 3 is retained at the wound in a state facing and fitting the wound, thereby avoiding the problem of excessive outflow of exudate due to excessive gap between the drainage tube 3 and the wound and the drainage tube 3 slipping.

[0105] No matter whether the exudate in the exudate cavity 6 or the exudate gap 9 is extracted, both are connected to the outside world. Under the action of air pressure, the exudate flowing out of the wound into the exudate cavity 6 or the exudate gap 9 is more easily extracted into the collecting tube 5 through the liquid hole 10, thereby preventing the exudate inside the wound from flowing out, and avoiding the problem of excessive outflow of exudate caused by extracting the exudate inside the wound.

[0106] In addition, the adjustable position of the collecting tube 5 is utilized to adapt to different exudate outflow situations. If the wound exudates too much, the raised tube wall 8 is moved away from the wound, and the exudate flows into the exudate cavity 6 before being extracted, so as to avoid the exudate accumulating in the wound and causing infection. If the wound exudates less, the raised tube wall 8 is made close to the epidermis around the wound, and the exudate flows into the exudate gap 9 and is directly extracted, which can reduce the contact of the exudate with the skin part in the exudate cavity 6 and reduce the possibility of infection of the surrounding skin.

[0107] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A system for treating exudate in a wound with an indwelling drainage tube, characterized in that: It comprises a negative pressure device, wherein the liquid outlet end of the negative pressure device is connected to a collection bag, and the liquid inlet end of the negative pressure device is connected to a collection tube (5); The end of the collecting tube (5) is provided with a positioning sticker (1), a mounting seat (4) is mounted on the positioning sticker (1), a through-hole (2) is opened on the mounting seat (4), the through-hole (2) is directly opposite to the wound, the collecting tube (5) passes through the through-hole (2), and a drainage tube (3) is penetrated on the collecting tube (5); The mounting seat (4) is opened toward one side of the wound to form a liquid seepage cavity (6) that is closed on all sides, and a through hole (7) is provided on the surface of the mounting seat (4), and the liquid seepage cavity (6) is connected to the outside through the through hole (7); The end of the collecting tube (5) close to the wound forms a convex tube wall (8) that bulges toward the side away from the wound, the convex tube wall (8) can contact the wound epidermis and form an exudate gap (9), and the convex tube wall (8) is provided with a liquid through hole (10), and the collecting tube (5) is connected with the exudate gap (9) and the exudate cavity (6) through the liquid through hole (10); The position of the raised tube wall (8) relative to the wound is adjusted by adjusting the position of the collecting tube (5) relative to the through-hole (2); A locking member (11) is provided between the through-port (2) and the collecting tube (5); after the position of the collecting tube (5) is adjusted, the collecting tube (5) is locked at the through-port (2) using the locking member (11).

2. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The distance between the outer edge of the raised tube wall (8) and the through-hole (2) is greater than the distance between the inner edge of the raised tube wall (8) and the through-hole (2); The outer edge of the raised tube wall (8) is provided with a perforation (12) in the horizontal direction, and the liquid seepage gap (9) is connected to the liquid seepage cavity (6) through the perforation (12).

3. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The locking member (11) comprises a threaded sleeve (111) arranged between the through-hole (2) and the collecting pipe (5); The outer wall of the threaded sleeve (111) is provided with an external thread, and the inner wall thereof is provided with an internal thread. The threaded sleeve (111) is assembled in the through-hole (2) via the external thread, and the outer wall of the collecting pipe (5) is threadably matched with the internal thread.

4. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The locking member (11) comprises a first sleeve (112) connected to the through-hole (2) and a second sleeve (113) threadedly assembled in the through-hole (2); The first sleeve (112) is open upward, and the second sleeve (113) is open downward. A conical wall (114) is formed on the inner wall of the second sleeve (113). A conical cylinder (115) is arranged between the conical wall (114) and the first sleeve (112). The collecting pipe (5) passes through the first sleeve (112), the second sleeve (113), the conical wall (114), and the conical cylinder (115). A buffer spring (116) is arranged between the conical cylinder (115) and the first sleeve (112). The conical cylinder (115) has a curved groove (117) on its wall, a steel ball (118) is installed in the curved groove (117), an annular wall groove (119) is formed on the outer wall of the collecting tube (5), and the outer wall of the steel ball (118) can be inserted into the annular wall groove (119); Wherein, the inner diameter of the end of the conical wall body (114) away from the wound is smaller than the inner diameter of the end of the conical wall body (114) close to the wound.

5. The exudate treatment system for wounds with indwelling drainage tubes according to claim 4, characterized in that: The collecting pipe (5) comprises a first pipe section (51) and a second pipe section (52) which are connected in sequence from top to bottom; The end of the second pipe section (52) is threadedly assembled in the first pipe section (51), and the annular wall groove (119) is provided in the first pipe section (51); A limit block (53) is provided on the inner wall of the first sleeve (112), a vertical groove (54) is provided on the outer wall of the second pipe section (52), and the limit block (53) is slidably disposed in the vertical groove (54).

6. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The mounting seat (4) comprises an outer ring seat (41) mounted on the positioning sticker (1) and a snap ring (42) mounted on the outer ring seat (41); The outer ring seat (41) is provided with a sleeve seat (43), and the sleeve seat (43) is clamped on the clamping ring (42); Wherein, the through hole (7) and the through opening (2) are both arranged on the sleeve (43).

7. The exudate treatment system for wounds with indwelling drainage tubes according to claim 6, characterized in that: An annular air bag (13) is arranged at the bottom of the outer ring seat (41), and the annular air bag (13) is in contact with the skin surface.

8. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The center of the positioning sticker (1) is provided with a center hole (14), the inner edge of the center hole (14) is provided with an annular groove (15), and the edge of the mounting seat (4) is fixed on the annular groove (15); The depth of the annular groove (15) is less than the thickness of the positioning sticker (1).

9. The exudate treatment system for wounds with indwelling drainage tubes according to claim 1, characterized in that: The outer wall of the collecting pipe (5) is connected to a connecting pipe (16), and the collecting pipe (5) is connected to the negative pressure device via the connecting pipe (16).

10. A method for treating exudate in a wound with an indwelling drainage tube according to any one of claims 1 to 9, characterized in that: The following steps are involved: Place the penetration port (2) directly against the wound, and attach the positioning patch (1) to the epidermis around the wound; Insert a drainage tube (3) into the wound, and simultaneously place a collection tube (5) directly opposite the wound; adjusting the position of the collection tube (5) relative to the wound according to the exudate situation of the wound; The collecting tube (5) is locked at the through opening (2) by using a locking member (11) to define the fixed state of the collecting tube (5) and the drainage tube (3) relative to the wound, so that the drainage tube (3) is left at the wound in a state of facing and fitting the wound; The exudate exudated from the wound is extracted through the collection tube (5).

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