Multi-cavity-gap negative pressure drainage device capable of avoiding blockage

Abstract

The invention relates to the technical field of negative pressure drainage, in particular to a multi-cavity-gap negative pressure drainage device capable of avoiding blockage, and aims to solve the problems that in the using process of a traditional drainage tube, blockage of the drainage tube, nerve and blood vessel suction and pulling and multi-cavity-gap drainage cannot be frequently caused, the multi-cavity-gap negative pressure drainage device comprises a confluence head, the drainage tube, a sealing part, a liquid guide tube and a negative pressure bottle; a plurality of drainage tubes are fixed in an opening of the confluence head, a sealing portion used for being sealed with skin is arranged at the opening of the confluence head, a liquid outlet of the confluence head is communicated with one end of a liquid guide tube, the other end of the liquid guide tube is detachably connected with a negative pressure bottle, the drainage tubes are cylindrical, and arc-shaped flow guide grooves are formed in the drainage tubes in the direction close to the axis of the confluence head. The negative pressure bottle comprises a bottle body, a bottle cap, a piston, a push rod and a locking device; a liquid inlet of the bottle body is detachably connected with the liquid guide pipe, the bottle body is detachably connected with the bottle cap through threads, and a piston is slidably connected into the bottle body.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure drainage, and in particular to a multi-cavity negative pressure drainage device capable of avoiding blockage. Background Art

[0002] In the medical field, drainage tubes are widely used in various surgeries and medical procedures. Drainage tubes are medical devices used for clinical surgical drainage. They are used to guide pus, blood, and fluids accumulated between human tissues or in body cavities to the outside of the body, thereby preventing postoperative infection and promoting wound healing. Traditional drainage tubes usually adopt a tubular design, which has the following problems: 1. The drainage tubes are easily affected by external forces during use and may be twisted or bent, causing the drainage tubes to be blocked at the bends, resulting in the inability to drain the accumulated fluid smoothly; 2. Due to the tubular design, the inner wall of the drainage tube is prone to forming clots, further exacerbating the blockage problem; 3. Due to the layered nature of tissues, multiple cavities may be generated during surgery, and the lack of communication between cavities will also lead to poor drainage, thereby affecting the patient's postoperative recovery; 4. The surgical site has structures such as nerves and blood vessels, and conventional tubular drainage devices may suck them into the tube cavity, resulting in unnecessary complications.

[0003] Therefore, during the use of traditional drainage tubes, problems such as blockage of the drainage tubes, suction of nerves and blood vessels, and inability to drain multiple cavities often occur. These problems not only affect the removal of accumulated fluid, but may also cause infection or other serious complications, adversely affecting the patient's recovery and disease control. Summary of the Invention

[0004] In order to solve the problems of traditional drainage tubes being blocked, sucking nerves and blood vessels, and being unable to perform multi-cavity drainage during use, the present invention provides a multi-cavity negative pressure drainage device that can avoid blockage.

[0005] The technical solution of the present invention is: A multi-cavity negative pressure drainage device capable of avoiding blockage, comprising a drainage tube, a liquid guide tube, a negative pressure bottle, a manifold and a sealing portion; Multiple drainage tubes are fixed in the opening of the junction head. A sealing part for sealing with the skin is provided at the opening of the junction head. The liquid outlet of the junction head is connected to one end of the drainage tube, and the other end of the drainage tube is detachably connected to a negative pressure bottle. The drainage tube is cylindrical, and an arc-shaped diversion groove is provided on the drainage tube close to the axis of the junction head.

[0006] Furthermore, the confluence head and the plurality of drainage tubes are integrally formed.

[0007] Furthermore, 2-4 drainage tubes are provided in the confluence head.

[0008] Furthermore, the negative pressure bottle includes a bottle body, a bottle cap, a piston, a push rod and a locking device; The liquid inlet of the bottle body is detachably connected to the liquid guide tube, and the bottle body and the bottle cap are detachably connected through a thread. A piston is slidably connected inside the bottle body, and a push rod is fixed on the piston. The push rod passes through the bottle cap, and a locking device that can lock the push rod and the bottle cap is provided on the bottle cap.

[0009] Furthermore, the locking device includes a sliding box, a latch, a shift block and a tension spring; The sliding box is fixedly connected to the upper end of the bottle cap, and a latch is slidably connected inside the sliding box. Both ends of the latch pass through the sliding box, and a shift block is provided on one end of the latch. A tension spring is provided in the sliding box, and the tension spring drives the latch to move toward the push rod. The push rod is provided with a ratchet that can be plugged into the latch.

[0010] Furthermore, it also includes a vertical guide part. The liquid outlet of the manifold is provided with a vertical guide part, and the vertical guide part is used to vertically connect the manifold and the liquid guide tube.

[0011] Furthermore, the catheter is detachably connected to the negative pressure bottle via a threaded joint.

[0012] Furthermore, a bracket is fixed in the confluence head, a plurality of fixing holes are opened on the bracket, and a drainage tube is fixed in each of the fixing holes.

[0013] Furthermore, 2-4 drainage tubes are fixedly connected to the fixed bracket in the confluence head.

[0014] Furthermore, the sealing portion includes an extension portion and a transparent film-like adhesive patch; The end surface of the opening of the confluence head is provided with a circular extension portion, and a transparent film-shaped adhesive patch for adhering to the skin is fixed on the extension portion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention forms a drainage channel without a hollow lumen by providing an arc-shaped guide groove on a cylindrical drainage tube. The guide groove maintains the drainage channel unobstructed when the drainage tube is bent, preventing the drainage tube from being partially bent and blocked due to external forces. Furthermore, the guide groove forms an open drainage channel, which reduces the possibility of accumulated fluid agglomerating and clogging the lumen, thereby allowing the accumulated fluid to be discharged smoothly.

[0016] 2. The present invention achieves negative pressure drainage by providing a negative pressure bottle. During the negative pressure drainage process, the drainage tube drains through the guide groove. Because the drainage tube has no hollow lumen structure, it avoids the damage to the surrounding nerves and blood vessels caused by suction during the negative pressure drainage process of traditional tubular drainage tubes.

[0017] 3. The negative pressure bottle of the present invention is detachably connected to the drainage tube via a threaded connection. When excessive fluid accumulates in the negative pressure bottle, rendering it unable to provide a negative pressure effect, the negative pressure bottle is removed from the drainage tube, the fluid is drained, the negative pressure bottle and the drainage tube are reconnected, and the piston in the negative pressure bottle is reset to restore the negative pressure drainage effect. This achieves a continuous negative pressure drainage effect of the drainage device.

[0018] 4. The present invention is equipped with multiple drainage tubes to achieve multi-cavity drainage. Because multiple cavities are generated during surgery and are not interconnected, conventional drainage methods require the placement of multiple drainage tubes for drainage, resulting in redundant drainage devices and poor drainage. At the same time, if a large cavity is generated during surgery, a single drainage tube cannot ensure sufficient drainage in all cavities. This device uses multiple drainage tubes installed in a confluence head to achieve synchronous drainage of multiple cavities and sufficient drainage of large cavities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the multi-cavity negative pressure drainage device of the present invention in the following state; Figure 2 Schematic diagram of the structure of the multi-cavity negative pressure drainage device of the present invention in state 2; Figure 3 It is a structural diagram of the connection between the catheter and the negative pressure bottle; Figure 4 It is a structural diagram of the installation method of the manifold and the drainage pipe; Figure 5 Schematic diagram of the structure of the drainage tube; Figure 6 It is a structural diagram of a negative pressure bottle; Figure 7 It is a longitudinal cross-sectional view of the negative pressure bottle; Figure 8 is a cross-sectional view of the locking device; Figure 9 This is a schematic diagram of the structure of the present invention in which double drainage tubes are installed; Figure 10 This is a schematic diagram of the structure of the vertical guide portion provided in the present invention.

[0020] In the figure: 1. Manifold; 2. Drainage tube; 3. Sealing part; 4. Liquid guide tube; 5. Negative pressure bottle; 501. Bottle body; 502. Bottle cap; 503. Piston; 504. Push rod; 6. Locking device; 601. Sliding box; 602. Latch; 603. Shift block; 604. Tension spring; 605. Ratchet; 7. Vertical guide part; 8. Bracket; 301. Extension part; 302. Transparent film-like adhesive patch. DETAILED DESCRIPTION

[0021] Specific implementation method 1: See Figure 1-5As shown, a multi-cavity negative pressure drainage device that can avoid blockage in this embodiment includes a catheter 4 and a negative pressure bottle 5, and also includes a manifold 1, a drainage tube 2 and a sealing portion 3; A plurality of drainage tubes 2 are fixed in the opening of the junction head 1. A sealing portion 3 for sealing with the skin is provided at the opening of the junction head 1. The liquid outlet of the junction head 1 is connected to one end of the liquid guide tube 4. The other end of the liquid guide tube 4 is detachably connected to a negative pressure bottle 5. The drainage tube 2 is cylindrical, and an arc-shaped guide groove is provided on the drainage tube 2 near the axis direction of the junction head 1.

[0022] Furthermore, the manifold 1 is a hollow cylindrical structure with one end open, and the drainage tube 2 is fixed inside the open end. The manifold 1 serves to collect the accumulated fluid and seal it with the skin. A circular hole for conducting the accumulated fluid is provided opposite the open end of the manifold 1, and the manifold 1 is connected to the drainage tube 2 through the circular hole. The drainage tube 2 is a flexible structure and can be arranged vertically on the side of the patient. The sealing portion 3 fits against the skin to ensure the airtightness between the drainage device and the patient's wound. The negative pressure bottle 5 is used to generate negative pressure and perform negative pressure drainage on the wound cavity through the drainage tube 2. This device installs multiple drainage tubes 2 through the manifold 1, and collects the accumulated fluid discharged from the drainage tube 2 to achieve synchronous drainage of multiple cavities. This device achieves synchronous drainage of multiple cavities and sufficient drainage of large cavities through the multiple drainage tubes installed on the manifold. The drainage tube 2 can also be used alone to play a drainage role. During the postoperative recovery process, the fluid accumulation is reduced and negative pressure drainage is no longer needed. The drainage tube 2 is cut off from the junction head 1, and the drainage tube 2 is pulled outward for a certain length, so that the drainage tube 2 acts as a drainage strip. The remaining fluid is discharged from the body through gravity or cavity squeezing, replacing the insertion of a new drainage strip into the body, reducing the drainage process and patient pain.

[0023] Furthermore, a guide groove is provided on the drainage tube 2 near the axis of the junction 1, so that the accumulated fluid flows along the drainage tube 2 to the center of the junction 1, which facilitates the discharge of the accumulated fluid. The cross-section of the drainage tube 2 is crescent-shaped, and a rounded corner is provided at the tangent point between the outer wall of the drainage tube 2 and the arc-shaped guide groove to prevent the drainage tube 2 from having sharp points due to bending, which may cause damage to the patient's wound. By providing an arc-shaped guide groove on the cylindrical drainage tube 2, the drainage tube 2 forms a drainage channel without a hollow lumen. The design of the guide groove can keep the drainage channel unobstructed when the drainage tube 2 is bent, and avoid the drainage tube 2 being partially bent and blocked when the drainage tube 2 is bent by external forces; and the design of the guide groove enables the drainage tube 2 to form an open drainage channel, which can reduce the accumulation of fluid in the drainage tube 2 from agglomerating and condensing to block the lumen, thereby allowing the accumulated fluid to be discharged smoothly. During the negative pressure drainage process, the drainage tube 2 achieves drainage through the guide groove. Since the drainage tube 2 has no hollow lumen structure, it avoids the damage to the peripheral nerves and blood vessels at the drainage site caused by suction during the negative pressure drainage process of the traditional tubular drainage tube.

[0024] Specific implementation method 2: See Figure 1-4As shown, the manifold 1 and the plurality of drainage tubes 2 of this embodiment are integrally formed.

[0025] Specific implementation method three: see Figure 1-4 As shown, the manifold 1 of this embodiment is provided with 2-4 drainage tubes 2. It is convenient to select the number of drainage tubes according to actual conditions to meet the needs of different patients.

[0026] Specific implementation method four: see Figure 6-7 As shown, the negative pressure bottle 5 of this embodiment includes a bottle body 501, a bottle cap 502, a piston 503, a push rod 504 and a locking device 6; The liquid inlet of the bottle body 501 is detachably connected to the liquid guide tube 4, and the bottle body 501 is detachably connected to the bottle cap 502 through a thread. A piston 503 is slidably connected inside the bottle body 501, and a push rod 504 is fixed on the piston 503. The push rod 504 passes through the bottle cap 502, and the bottle cap 502 is provided with a locking device 6 that can lock the push rod 504 and the bottle cap 502.

[0027] Furthermore, the bottle body 501 is a hollow cylindrical structure with an open end, and the open end is used to install the piston 503. A liquid inlet is provided at one end of the rodless cavity of the bottle body 501, and the liquid inlet is provided with a threaded connection portion for threaded connection with the liquid guide tube 4. The rodless cavity of the bottle body 501 is connected to the manifold 1 through the liquid guide tube 4. The push rod 504 is used to pull the piston 503 outside the negative pressure bottle 5. By pulling the piston 503 through the push rod 504, negative pressure is generated in the rodless cavity of the bottle body 501, and then negative pressure is generated at the manifold 1 through the liquid guide tube 4. The manifold 1 sucks out the accumulated liquid in different cavities through the drainage tube 2 to achieve negative pressure drainage. The locking device 6 is used to prevent the piston 503 from rebounding. When the push rod 504 is pulled, the locking device 6 limits the push rod 504 to maintain a continuous negative pressure state in the bottle body 501.

[0028] Specific implementation method five: see Figure 8 As shown, the locking device 6 of this embodiment includes a sliding box 601, a latch 602, a shift block 603 and a tension spring 604; The sliding box 601 is fixedly connected to the upper end of the bottle cap 502, and a latch 602 is slidably connected inside the sliding box 601. Both ends of the latch 602 pass through the sliding box 601. A shift block 603 is provided on one end of the latch 602. A tension spring 604 is provided in the sliding box 601. The tension spring 604 drives the latch 602 to move toward the push rod 504. The push rod 504 is provided with a ratchet 605 that can be plugged into the latch 602.

[0029] Furthermore, the sliding box 601 is a rectangular structure with a sliding chamber defined within it, into which the latch 602 is slidably connected. The contact end between the latch 602 and the ratchet 605 is chamfered. Pulling the ratchet 605 out of the negative pressure bottle 5 (in the clockwise direction) causes the latch 602 to bounce on the ratchet 605. Pushing the ratchet 605 into the negative pressure bottle 5 (in the counterclockwise direction) causes the latch 602 to penetrate the ratchet 605, locking it and preventing it from advancing into the negative pressure bottle 5, thereby limiting its position.

[0030] When negative pressure needs to be generated, the push rod 504 is pulled out from the bottle body 501, and the pin 602 is inserted into the ratchet 605 under the action of the spring and locked with the ratchet 605; when the piston 503 needs to be pushed, the shift block 603 is pushed, and the shift block 603 drives the pin 602 to be pulled out from the ratchet 605, the ratchet 605 is unlocked, and then the push rod 504 is pushed into the bottle body 501.

[0031] Specific implementation method six: see Figure 10 As shown, the liquid outlet of the manifold 1 of this embodiment is provided with a vertical guide portion 7 , and the vertical guide portion 7 is used to vertically connect the manifold 1 and the liquid guide tube 4 .

[0032] Furthermore, the vertical guide portion 7 changes the connection mode between the junction 1 and the catheter 4 from concentric to vertical. Since the horizontal height of the negative pressure bottle 5 needs to be lower than the wound, the catheter 4 needs to be arranged vertically on the side of the patient. The vertical guide portion 7 allows the catheter 4 to naturally hang vertically to the side of the patient, reducing the torsional force on the skin at the junction 1 due to the downward bending of the catheter 4.

[0033] Specific implementation method seven: See Figure 3 As shown, the liquid catheter 4 of this embodiment is detachably connected to the negative pressure bottle 5 through a threaded joint.

[0034] Furthermore, the negative pressure bottle 5 is detachably connected to the drainage tube 4 via a threaded connection. When excessive fluid accumulates in the negative pressure bottle 5, rendering it unable to provide a negative pressure effect, the negative pressure bottle 5 is removed from the drainage tube 4, the fluid is drained, the negative pressure bottle 5 is reconnected to the drainage tube 4, and finally, the piston 503 in the negative pressure bottle 5 is reset to restore the negative pressure drainage effect of the negative pressure bottle 5, thereby achieving a continuous negative pressure drainage effect of the drainage device.

[0035] Specific implementation method eight: see Figure 4 As shown, a bracket 8 is fixed in the confluence head 1 of this embodiment. The bracket 8 is provided with a plurality of fixing holes, and a drainage tube 2 is fixed in each fixing hole.

[0036] Furthermore, the bracket 8 is used to fix the drainage tube 2 in the manifold 1, and the fixing hole plays a role in supporting the drainage tube 2 and allowing the accumulated fluid to pass through.

[0037] Specific implementation method nine: See Figure 9 As shown, the number of drainage tubes 2 in this embodiment is 2-4.

[0038] Furthermore, 2-4 drainage tubes 2 can be fixed in the junction 1, and different numbers of drainage tubes 2 can be used to complete multi-cavity drainage according to the number of cavities generated by the operation.

[0039] Specific implementation method ten: See Figure 1-2 As shown, the sealing portion 3 of this embodiment includes an extension portion 301 and a transparent film-shaped adhesive patch 302; The end surface of the opening of the confluence head 1 is provided with a circular extension portion 301 , and a transparent film-shaped adhesive patch 302 for adhering to the skin is fixed on the extension portion 301 .

[0040] Furthermore, the annular extension 301 is used to increase the contact area between the manifold 1 and the transparent film-like adhesive patch 302, preventing the transparent film-like adhesive patch 302 from falling off the manifold 1. The transparent film-like adhesive patch 302 is used to seal the manifold 1 against the skin. Conventional drainage tubes are prone to air leakage in the contact area between the tube and the tissue, resulting in a loss of negative pressure. Therefore, the transparent film-like adhesive patch 302 is provided to seal this area.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-cavity negative pressure drainage device capable of avoiding blockage, comprising a catheter (4) and a negative pressure bottle (5), characterized in that: It also includes a confluence head (1), a drainage tube (2) and a sealing portion (3); A plurality of drainage tubes (2) are fixed in the opening of the confluence head (1), a sealing portion (3) for sealing with the skin is provided at the opening of the confluence head (1), the liquid outlet of the confluence head (1) is connected to one end of the liquid guide tube (4), and the other end of the liquid guide tube (4) is detachably connected to a negative pressure bottle (5), the drainage tube (2) is cylindrical, and an arc-shaped guide groove is provided on the drainage tube (2) close to the axis direction of the confluence head (1).

2. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: The confluence head (1) and the plurality of drainage tubes (2) are integrally formed.

3. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 2, characterized in that: The confluence head (1) is provided with 2-4 drainage tubes (2).

4. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: The negative pressure bottle (5) comprises a bottle body (501), a bottle cap (502), a piston (503), a push rod (504) and a locking device (6); The liquid inlet of the bottle body (501) is detachably connected to the liquid guide tube (4), and the bottle body (501) is detachably connected to the bottle cap (502) via a thread. A piston (503) is slidably connected inside the bottle body (501), and a push rod (504) is fixed on the piston (503). The push rod (504) passes through the bottle cap (502), and a locking device (6) is provided on the bottle cap (502) for locking the push rod (504) and the bottle cap (502).

5. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 3, characterized in that: The locking device (6) comprises a sliding box (601), a latch (602), a shift block (603) and a tension spring (604); The sliding box (601) is fixedly connected to the upper end of the bottle cap (502), and a latch (602) is slidably connected in the sliding box (601). Both ends of the latch (602) pass through the sliding box (601), and a shift block (603) is provided on one end of the latch (602). A tension spring (604) is provided in the sliding box (601), and the tension spring (604) drives the latch (602) to move in the direction of the push rod (504). The push rod (504) is provided with a ratchet (605) that can be plugged with the latch (602).

6. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: It also includes a vertical guide portion (7), and the liquid outlet of the confluence head (1) is provided with the vertical guide portion (7).

7. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: The liquid guiding tube (4) is detachably connected to the negative pressure bottle (5) via a threaded joint.

8. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: A bracket (8) is fixed in the confluence head (1), a plurality of fixing holes are provided on the bracket (8), and a drainage tube (2) is fixed in each fixing hole.

9. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 8, characterized in that: The number of the drainage tubes (2) is 2-4.

10. The multi-cavity negative pressure drainage device capable of avoiding clogging according to claim 1, characterized in that: The sealing portion (3) comprises an extension portion (301) and a transparent film-shaped adhesive patch (302); An annular extension portion (301) is provided on the end face of the opening of the confluence head (1), and a transparent film-shaped adhesive patch (302) for adhering to the skin is fixed on the extension portion (301).

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