Negative pressure type drainage device for orthopedic postoperative wound infection

Abstract

The utility model discloses a negative pressure type drainage device for orthopedic postoperative wound infection, which comprises a negative pressure aspirator, a drainage tube is connected to the negative pressure aspirator, a sucker is connected to the end of the drainage tube, an operating tube coaxial with the sucker is arranged on the side of one end, connected with the sucker, of the drainage tube, and the operating tube is connected with the sucker. A sleeve capable of axially moving along the operation pipe is arranged in the operation pipe, a fixed plate and a rotating plate which extend out are arranged at the front end of the sleeve, and a driving part for driving the rotating plate to rotate to enable the fixed plate and the rotating plate to be relatively clamped or opened is arranged on the sleeve. By arranging the operation tube and the sleeve, blocked tissue at the end of the drainage tube can be clamped and pulled up through the fixing plate and the rotating plate at the end of the sleeve, the adhered tissue is separated, the tissue is conveniently sucked out by the drainage tube, and therefore the problem that an existing negative pressure drainage tube is prone to being blocked by necrotic tissue is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a negative pressure drainage device for orthopedic postoperative wound infection. Background Art

[0002] The wound after orthopedic surgery is prone to infection. After infection, necrotic tissue and exudate will form at the wound. The exudate needs to be removed by negative pressure drainage. However, during negative pressure suction, the necrotic tissue is prone to block the negative pressure drainage tube, affecting the discharge of necrotic tissue and exudate at the bone. Content of the Utility Model

[0003] The utility model provides a negative pressure drainage device for orthopedic postoperative wound infection, which can solve the problem that the necrotic tissue is prone to block the negative pressure drainage tube during negative pressure drainage of the wound after orthopedic surgery in the prior art.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A negative pressure drainage device for orthopedic postoperative wound infection, including a negative pressure suction device. A drainage tube is connected to the negative pressure suction device. One end of the drainage tube is connected with a suction cup. An operation tube coaxial with the suction cup is arranged on the side of the end of the drainage tube connected with the suction cup. A sleeve that can axially move along the operation tube is arranged inside the operation tube. A fixing plate and a rotating plate that extend out are arranged at the front end of the sleeve. A driving component for driving the rotating plate to rotate to make the fixing plate and the rotating plate clamp or open relatively is arranged on the sleeve. By arranging the operation tube and the sleeve, the blocking tissue at the end of the drainage tube can be clamped and pulled up by the fixing plate and the rotating plate at the end of the sleeve, and the adhered tissue can be separated, facilitating the tissue to be sucked out by the drainage tube, thereby solving the problem that the existing negative pressure drainage tube is prone to be blocked by necrotic tissue.

[0005] Preferably, a biological semi-permeable membrane with an area larger than the suction cup is arranged on the suction cup. The biological semi-permeable membrane can be used to paste the suction cup and the dressing on the wound surface, improving the fixing stability of the suction cup.

[0006] Preferably, the driving component includes a connecting rod arranged inside the sleeve and connected with the rotating plate at one end. The other end of the connecting rod is connected with a rotating handle at the tail of the sleeve. The rotating handle is hinged with a fixed handle fixed at the tail of the sleeve. By pulling the connecting rod, the rotating plate can be rotated. The relative rotation of the rotating handle and the fixed handle can realize the pulling of the connecting rod, and the operation is convenient.

[0007] Preferably, cutting teeth are arranged on the relative side surfaces of the fixing plate and the rotating plate, improving the firmness after the fixing plate and the rotating plate clamp the tissue.

[0008] Preferably, the cross-section of the cutting teeth is triangular or conical, which is beneficial for the cutting teeth on the fixing plate and the rotating plate to engage and clamp the tissue.

[0009] Preferably, at least one piston is sleeved outside the sleeve, and the piston is in contact with the inner wall of the operation tube. The piston can ensure that the inside of the operation tube is in a sealed state, ensuring the effect of negative pressure suction.

[0010] Preferably, at least one sealing gasket matching the inner cross-section of the sleeve is arranged inside the sleeve, and the connecting rod passes through the sealing gasket for connection. The sealing gasket can ensure the sealing performance inside the sleeve, and the movement of the connecting rod will not affect the sealing performance of the sealing gasket.

[0011] Preferably, the outer sides of the rotating handle and the fixed handle are both wrapped with anti-slip sleeves to prevent the rotating handle and the fixed handle from slipping off the fingers during operation.

[0012] Preferably, a detachable sealing plug is connected to the tail of the operation tube. When the sleeve is not in use, the tail of the operation tube can be blocked with the sealing plug to prevent external bacteria from entering the operation tube.

[0013] Preferably, the suction cup is made of a transparent material to improve the visibility during the use of the sleeve and accurately clamp and lift the tissue.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By providing the operation tube and the sleeve, the blocking tissue at the end of the drainage tube can be clamped and lifted by using the fixing plate and the rotating plate at the end of the sleeve, and the adhered tissue can be separated, facilitating the tissue to be sucked out by the drainage tube. The operation is simple, and the continuity of the negative pressure drainage operation can be ensured, thereby solving the problem that the existing negative pressure drainage tube is easily blocked by necrotic tissue; the operation tube and the sleeve have good sealing performance, which can meet the need of continuous negative pressure suction and prevent external bacteria from entering the wound position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structure diagram of the present utility model;

[0017] Figure 2 is the three-dimensional structure schematic diagram of the sleeve of the present utility model;

[0018] Figure 3 is Figure 2 the enlarged structure diagram at A of

[0019] Figure 4 is the sectional view structure diagram of the sleeve of the present utility model.

[0020] Reference numerals:

[0021] 1. Negative pressure aspirator, 11. Fixed handle, 12. Cutting teeth, 13. Piston, 14. Sealing gasket, 15. Sealing plug, 16. Anti-slip sleeve, 2. Drainage tube, 3. Biological semi-permeable membrane, 4. Suction cup, 5. Operating tube, 6. Sleeve, 7. Fixed plate, 8. Rotating plate, 9. Connecting rod, 10. Rotating handle. Detailed implementation manner

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The present invention aims to solve the problem that necrotic tissues are likely to block the negative pressure drainage tube during the negative pressure drainage of the wound after orthopedic surgery in the prior art. As Figures 1-4 shown, the following technical solutions are provided: A negative pressure drainage device for wound infection after orthopedic surgery includes a negative pressure aspirator 1. A drainage tube 2 is connected to the negative pressure aspirator 1. One end of the drainage tube 2 is connected to a suction cup 4. A side portion of the end of the drainage tube 2 connected to the suction cup 4 is provided with an operating tube 5 coaxial with the suction cup 4. Inside the operating tube 5, there is a sleeve 6 that can axially move along the operating tube 5. The front end of the sleeve 6 is provided with a protruding fixed plate 7 and a rotating plate 8. The sleeve 6 is provided with a driving component that drives the rotating plate 8 to rotate so that the fixed plate 7 and the rotating plate 8 are relatively clamped or opened. By providing the operating tube 5 and the sleeve 6, the blocking tissues at the end of the drainage tube 2 can be clamped and lifted by the fixed plate 7 and the rotating plate 8 at the end of the sleeve 6, and the adhered tissues can be separated, facilitating the tissues to be sucked out by the drainage tube 2, thereby solving the problem that the existing negative pressure drainage tube is easily blocked by necrotic tissues.

[0024] Specifically, both the drainage tube 2 and the suction cup 4 and the negative pressure aspirator 1 are detachable structures. The suction cup 4 has the function of contacting and sucking the skin. When a negative pressure attraction force is generated in the drainage tube 2, the suction cup 4 can suck the skin around the wound. The end of the drainage tube 2 is facing the wound. The drainage tube 2 can suck the necrotic tissues and exudate on the wound into the negative pressure aspirator 1. However, for large-area adhered tissues, it is easy to block the drainage tube 2. At this time, the sleeve 6 is axially moved, and the large-area adhered tissues are clamped and lifted by the fixed plate 7 and the rotating plate 8 at the end of the sleeve 6 to break away from the adhesion, so that the tissues can be sucked away by the drainage tube 2. Among them, the suction cup 4 is made of a transparent material to improve the visibility during the use of the sleeve 6 and accurately clamp and lift the tissues.

[0025] In this embodiment, a biological semi-permeable membrane 3 with an area larger than that of the suction cup 4 is provided on the suction cup 4. The biological semi-permeable membrane 3 can be used to paste the suction cup 4 and the dressing on the wound surface, improving the fixing stability of the suction cup 4. The biological semi-permeable membrane 3 has adhesiveness and good air permeability, but has a good blocking property for the tissues and exudates at the wound.

[0026] In this embodiment, as Figure 4 shown, the driving component includes a connecting rod 9 disposed inside the sleeve 6 and connected to the rotating plate 8 at one end. The other end of the connecting rod 9 is connected to a rotating handle 10 at the tail of the sleeve 6. The rotating handle 10 is hinged to a fixed handle 11 fixed to the tail of the sleeve 6. By pulling the connecting rod 9, the rotating plate 8 can be rotated. The relative rotation of the rotating handle 10 and the fixed handle 11 can achieve the pulling of the connecting rod 9, which is convenient to operate. The rotating plate 8 is rotatably connected to the front end of the sleeve 6. The connecting rod 9 is eccentrically disposed with respect to the rotation center on the rotating plate 8, and one end of the connecting rod 9 is hinged to the rotating plate 8. When the connecting rod 9 is pulled, the rotating plate 8 will rotate. Specifically, when the rotating handle 10 and the fixed handle 11 rotate towards each other and approach, the connecting rod 9 axially moves towards the tail of the sleeve 6, and the rotating plate 8 and the fixed plate 7 rotate towards each other and clamp the tissue. Similarly, when the rotating handle 10 and the fixed handle 11 move away from each other, the rotating plate 8 and the fixed plate 7 rotate away from each other and release the tissue. At the same time, in order to improve the firmness of clamping the tissue, cutting teeth 12 are provided on the relative side surfaces of the fixed plate 7 and the rotating plate 8. In this embodiment, anti-slip sleeves 16 are wrapped around the outer sides of the rotating handle 10 and the fixed handle 11 to prevent the rotating handle 10 and the fixed handle 11 from slipping off the fingers during operation.

[0027] Among them, the cross-section of the cutting teeth 12 can be triangular or conical, which is beneficial for the cutting teeth 12 on the fixed plate 7 and the rotating plate 8 to mesh and clamp the tissue.

[0028] As Figures 3-4 shown, at least one piston 13 is sleeved on the outer side of the sleeve 6. The piston 13 is in contact with the inner side wall of the operation tube 5. The piston 13 can ensure that the inside of the operation tube 5 is in a closed state, ensuring the effect of negative pressure suction. Among them, the piston 13 can be made of elastic materials such as rubber and silica gel.

[0029] As Figure 4As shown, at least one gasket 14 matching the inner cross-section of the sleeve 6 is provided inside the sleeve 6. The connecting rod 9 passes through the gasket 14 for connection. The gasket 14 can ensure the tightness inside the sleeve 6, and the movement of the connecting rod 9 will not affect the tightness of the gasket 14. Among them, the gasket 14 can also be made of elastic materials such as rubber and silica gel. The connecting rod 9 and the gasket 14 are fixedly and tightly connected. The moving distance of the connecting rod 9 is relatively small. Therefore, when the connecting rod 9 moves, it can drive the gasket 14 to deform slightly, and the inside of the sleeve 6 remains in a sealed state.

[0030] In addition, as Figure 1 shown, a detachable sealing plug 15 is connected to the tail of the operating tube 5. When the sleeve 6 is not in use, the tail of the operating tube 5 can be blocked by the sealing plug 15 to prevent external bacteria from entering the operating tube 5.

[0031] The specific operation steps of the negative pressure drainage device in this embodiment are as follows:

[0032] When the negative pressure drainage device for orthopedic postoperative wound infection is in use, first connect the suction cup 4 and the drainage tube 2 together, then cover the dressing on the wound, and make an opening in the dressing so that the bottom of the suction cup 4 can cover the opening in the dressing. Then use the biological semi-permeable membrane 3 to paste the suction cup 4 and the dressing on the wound surface, and connect the drainage tube 2 with the negative pressure aspirator 1. Turn on the negative pressure aspirator 1 to suck the tissues and exudates at the wound out through the drainage tube 2. When larger tissues block the orifice of the drainage tube 2, move the sleeve 6 and the piston 13 in the operating tube 5 to the blocked position. Then place the hand on the fixed handle 11 and turn the rotating handle 10 with the thumb. When the rotating handle 10 rotates, it drives the connecting rod 9 to move, thereby driving the rotating plate 8 to rotate, so that the rotating plate 8 moves away from the fixed plate 7. Then push the sleeve 6 and the piston 13 forward so that the blockage is located between the rotating plate 8 and the fixed plate 7. Then operate the rotating handle 10 to rotate, make the connecting rod 9 move, and drive the rotating plate 8 to rotate so that the cutting teeth 12 on the rotating plate 8 and the fixed plate 7 are engaged to separate the adhered tissues, which is convenient to be sucked out by the drainage tube 2. During the whole operation process, the inside of the operating tube 5 can be kept in a negative pressure state, and external bacteria can also be prevented from entering the inside.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0034] In addition, in the present utility model, descriptions such as "primary level" and "secondary level" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "primary level" and "secondary level" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0035] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A negative pressure drainage device for postoperative wound infection in orthopedics, characterized in that: include: A negative pressure suction device (1), wherein a drainage tube (2) is connected to the negative pressure suction device (1), the end of the drainage tube (2) is connected to a suction cup (4), an operating tube (5) coaxial with the suction cup (4) is arranged on the side of one end of the drainage tube (2) connected to the suction cup (4), a sleeve (6) which can move axially along the operating tube (5) is arranged inside the operating tube (5), a protruding fixed plate (7) and a rotating plate (8) are arranged at the front end of the sleeve (6), and a driving component is arranged on the sleeve (6) for driving the rotating plate (8) to rotate so that the fixed plate (7) and the rotating plate (8) are relatively clamped or opened.

2. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1, characterized in that: The sucking cup (4) is provided with a biological semi-permeable membrane (3) having an area larger than the sucking cup (4).

3. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1, characterized in that: The driving component comprises a connecting rod (9) which is arranged inside the sleeve (6) and connected to the rotating plate (8) at one end, the other end of the connecting rod (9) is connected to a rotating handle (10) at the rear end of the sleeve (6), and the rotating handle (10) is hinged to a fixed handle (11) fixed at the rear end of the sleeve (6).

4. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1 or 3, characterized in that: Cutting teeth (12) are arranged on opposite sides of the fixed plate (7) and the rotating plate (8).

5. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 4, characterized in that: The cross section of the cutting teeth (12) is triangular or conical.

6. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1, characterized in that: At least one piston (13) is sleeved on the outer side of the sleeve (6), and the piston (13) is in contact with the inner side wall of the operating tube (5).

7. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 3, characterized in that: At least one sealing gasket (14) matching the internal cross section of the sleeve (6) is arranged inside the sleeve (6), and the connecting rod (9) passes through the sealing gasket (14) for connection.

8. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 3, characterized in that: The outer sides of the rotating handle (10) and the fixed handle (11) are both wrapped with anti-slip covers (16).

9. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1, characterized in that: The tail of the operating tube (5) is connected with a detachable sealing plug (15).

10. The negative pressure drainage device for orthopedic postoperative wound infection according to claim 1, characterized in that: The suction cup (4) is made of transparent material.

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