Suction apparatus for surgical debridement

Abstract

The present application relates to the technical field of medical apparatus and instruments, in particular to a suction device for surgical debridement, which comprises a debridement mechanism including a negative pressure suction machine, a buffer bottle and a liquid storage bottle arranged on the negative pressure suction machine, a hose for sequentially connecting the negative pressure suction machine, the buffer bottle and the liquid storage bottle, and a suction device connected to the liquid storage bottle through the hose, a suction force adjusting mechanism including a negative pressure adjusting assembly arranged on the connecting hose of the liquid storage bottle and the suction device, and an adjusting knob arranged on the negative pressure adjusting assembly, the negative pressure adjusting assembly including a flow pipe connected to the suction device and a negative pressure hole opened on the flow pipe, which solves the problem that the existing suction device often has only a fixed suction force, and even if the suction force can be adjusted, it needs to be adjusted and set on the negative pressure host, and cannot be adjusted in real time according to actual needs during the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a suction device for surgical debridement. Background Art

[0002] In surgical operations, debridement is a crucial step aimed at removing foreign matter, necrotic tissue and blood from the wound to promote wound healing and reduce the risk of infection. The suction device is one of the indispensable medical tools for debridement. The suction device creates a negative pressure state in the suction head and uses atmospheric pressure to squeeze the material outside the suction head toward the suction head, thereby achieving the "suction" effect. It is widely used in the cleaning of bleeding, exudate, pus, and contents of chest organs during surgery.

[0003] During surgical debridement, various types of tissue residues are encountered, such as blood, pus, adipose tissue, and necrotic tissue. These substances vary in nature, form, and size, and therefore require different suction forces to be effectively removed. However, existing suction devices often only have a fixed suction force. Even if the suction force can be adjusted, it needs to be adjusted and set on the negative pressure host, and cannot be adjusted in real time according to actual needs during the operation.

[0004] When faced with difficult-to-clean tissues, such as relatively viscous pus or tightly attached necrotic tissue, fixed suction often cannot effectively absorb them, which not only affects the efficiency of the operation, but may also lead to contamination and increased risk of infection in the surgical area. In addition, excessive suction may also cause damage to surrounding healthy tissues, such as rupturing blood vessels or nerve tissue, and then causing bleeding or functional disorders. In order to solve the above problems, a suction device for surgical debridement is proposed. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the problems existing in the prior art, the present invention provides a suction device for surgical debridement to solve the problem mentioned in the background technology that the existing suction equipment often has only a fixed suction force. Even if the suction force can be adjusted, it needs to be adjusted and set on the negative pressure host, and it cannot be adjusted in real time according to actual needs during the operation.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a suction device for surgical debridement, comprising a debridement mechanism, which includes a negative pressure suction machine, a buffer bottle and a liquid storage bottle arranged on the negative pressure suction machine, and also includes a hose for connecting the negative pressure suction machine, the buffer bottle and the liquid storage bottle in sequence, and a suction end tube connected to the liquid storage bottle through the hose, a suction adjustment mechanism, which includes a negative pressure adjustment component arranged on the hose connecting the liquid storage bottle and the suction end tube, and a gear adjustment component arranged on the negative pressure adjustment component, the negative pressure adjustment component includes a circulation tube connected to the suction end tube, a negative pressure hole opened on the circulation tube, and also includes a guide tube arranged in the inner cavity of the circulation tube and corresponding to the negative pressure hole, and a sleeve sleeved on the outside of the circulation tube, the guide tube is provided with a guide surface, and the opening end of the guide tube away from the negative pressure hole is inclined.

[0009] The present invention is further configured such that a plurality of the negative pressure holes are provided in a linear array along the axial direction of the circulation tube, and the plurality of the negative pressure holes are all connected to a flow guide tube.

[0010] The present invention is further configured such that one end of the circulation tube is fixedly connected to the suction end tube, and the other end of the circulation tube is fixedly connected to the hose, a stop block is provided at one end of the circumferential side wall of the circulation tube close to the hose, and a return spring is sleeved on the outside of the circulation tube.

[0011] The present invention is further configured such that a spring cavity is formed at one end of the sleeve close to the stopper, and the spring cavity matches the return spring.

[0012] The present invention is further configured such that a pressure rod is rotatably mounted on one end of the circumferential side wall of the circulation tube away from the block, and a finger ring is provided on the end of the pressure rod away from the rotatable connection with the circulation tube, a connecting rod is rotatably mounted on one end of one side of the pressure rod close to the finger ring, and the end of the connecting rod away from the pressure rod is rotatably connected to the circumferential side wall of the sleeve.

[0013] The present invention is further configured such that a limiting groove is provided on the outer wall of the circumferential side wall of the circulation pipe, a limiting strip is provided on the inner wall of the sleeve, and the limiting strip and the limiting groove are slidably matched.

[0014] The present invention is further configured such that the shift adjustment assembly includes a shift groove provided on the outer wall of the circumferential side wall of the circulation pipe, and the shift groove is composed of a stepped shift area and a reset area.

[0015] The present invention is further configured such that the stepped shifting area is a stepped strip groove, and the high end of the strip groove step is located at an end of the stepped shifting area away from the sleeve.

[0016] The present invention is further configured such that the reset area is an arc-shaped groove, and the bottom surface of the arc-shaped groove is inclined, the reset area is arranged on one side of the step gear area, and the reset area and the two ends of the step gear area are connected, the high end of the inclined bottom surface of the reset area is away from the sleeve, and the high end of the inclined bottom surface of the reset area is higher than the high end of the step gear area and is connected in a step-like manner, and the low end of the inclined bottom surface of the reset area is flush with the low end of the step gear area and is gently connected.

[0017] The present invention is further configured such that the gear adjustment assembly also includes a rotating hole opened at the end of the sleeve away from the return spring, and a gear rod is rotatably installed inside the rotating hole, the gear rod is U-shaped, and the end of the gear rod away from the rotating hole is slidingly matched with the gear slot.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present invention provides a suction device for surgical debridement, which has the following beneficial effects:

[0020] 1. The present invention sets a negative pressure regulating component between the suction end tube and the hose. After the negative pressure suction machine is started and the negative pressure suction is adjusted, the suction end tube has an initial suction force, which is the minimum suction force value, and can be used to suck out and clean some blood. When cleaning difficult-to-clean substances such as pus, fat tissue and necrotic tissue, the finger ring is pressed to drive the pressure rod to drive the connecting rod, so that the sleeve moves on the circulation tube to cover the negative pressure hole, thereby improving the suction force of the suction end tube, thereby solving the problem that the existing suction equipment often has only a fixed suction force. Even if the suction force can be adjusted, it needs to be adjusted and set on the negative pressure host, and it cannot be adjusted in real time according to actual needs during the operation.

[0021] 2. In the present invention, a connecting guide pipe is provided inside the flow pipe and at a position corresponding to the negative pressure hole. The flow direction of the material sucked into the flow pipe is guided by the guide surface on the guide pipe, and the opening end of the guide pipe away from the negative pressure hole is inclined, and the direction of the inclined opening forms a large acute angle with the axial direction of the guide pipe, so that when the material moves along the guide surface and then detaches, the position of the material exceeds the opening position of the guide pipe, thereby preventing the flowing material from entering the guide pipe.

[0022] 3. When the present invention drives the sleeve to move and cover the negative pressure hole by pressing the finger ring and adjusts the suction force of the suction end tube, the gear adjustment component can be set to lock the gear when it is adjusted to the appropriate position, thereby avoiding the occurrence of hand cramps caused by manual continuous pressing of the finger ring to control the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a suction device used for surgical debridement.

[0024] Figure 2 This is a schematic diagram of the suction adjustment mechanism structure of a suction device used for surgical debridement.

[0025] Figure 3 This is a schematic diagram of the internal structure of the suction adjustment mechanism of a suction device used for surgical debridement.

[0026] Figure 4 This is a schematic diagram of the circulation tube structure of a suction device used for surgical debridement.

[0027] Figure 5 Schematic diagram of the cannula structure of a suction device used for surgical debridement.

[0028] Figure 6 This is a structural diagram of the connection between the stepped shifting area and the reset area in the shifting slot of a suction device for surgical debridement.

[0029] In the figure: 1. debridement mechanism; 101. negative pressure suction machine; 102. buffer bottle; 103. liquid storage bottle; 104. hose; 105. suction end tube; 2. suction adjustment mechanism; 3. negative pressure adjustment assembly; 301. circulation tube; 302. negative pressure hole; 303. guide tube; 304. sleeve; 305. guide surface; 306. block; 307. reset spring; 308. spring chamber; 309. pressure rod; 310. finger ring; 311. connecting rod; 312. limit groove; 313. limit strip; 4. gear adjustment assembly; 401. gear groove; 402. step gear area; 403. reset area; 404. rotating hole; 405. gear rod. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] For examples, see Figure 1 - Figure 6A suction device for surgical debridement includes a debridement mechanism 1, which includes a negative pressure suction machine 101, a buffer bottle 102 and a liquid storage bottle 103 arranged on the negative pressure suction machine 101, and also includes a hose 104 for connecting the negative pressure suction machine 101, the buffer bottle 102 and the liquid storage bottle 103 in sequence, and a suction end tube 105 connected to the liquid storage bottle 103 through the hose 104. The negative pressure suction machine 101 is connected to the inside of the buffer bottle 102 through the hose 104, and then the buffer bottle 102 is connected to the liquid storage bottle 103 through the hose 104, and finally the liquid storage bottle 103 is connected to the suction end tube 105 through the hose 104. The negative pressure suction machine 101 can adjust the initial suction force and is suitable for debridement in different operations.

[0034] The suction force regulating mechanism 2 includes a negative pressure regulating assembly 3 provided on the connecting hose 104 between the liquid storage bottle 103 and the suction end tube 105, and a gear adjustment assembly 4 provided on the negative pressure regulating assembly 3;

[0035] The negative pressure regulating assembly 3 includes a circulation tube 301 connected to the suction end tube 105, a negative pressure hole 302 provided on the circulation tube 301, a flow guide tube 303 provided in the inner cavity of the circulation tube 301 and corresponding to the negative pressure hole 302, and a sleeve 304 sleeved on the outside of the circulation tube 301.

[0036] A flow guiding surface 305 is provided on the flow guiding tube 303 , and the opening end of the flow guiding tube 303 away from the negative pressure hole 302 is inclined.

[0037] The negative pressure regulating assembly 3 is arranged between the hose 104 and the suction end tube 105. After the negative pressure suction machine 101 is started, the suction force generated by the negative pressure sucks the debridement material from the suction end tube 105, flows through the circulation tube 301 and the hose 104 into the liquid storage bottle 103.

[0038] Specifically, in the initial state, the sleeve 304 is sleeved on the outside of the circulation tube 301 and does not cover the negative pressure hole 302. Therefore, after the negative pressure suction machine 101 is started, the gas sucked in by the negative pressure will enter from the port of the suction end tube 105 and the negative pressure hole 302. At this time, the gas flow rate generated by the initial suction force set by the negative pressure suction machine 101 is fixed. During the surgical debridement process, when there is tissue or pus that is difficult to clean, it is necessary to increase the suction force of the suction end tube 105. The sleeve 304 can be moved so that the sleeve 304 covers the negative pressure hole 302, thereby reducing the area of ​​the air inlet hole. However, the gas flow rate generated by the initial suction force set by the negative pressure suction machine 101 is fixed, so the gas flow rate will increase, thereby increasing the suction force of the port of the suction end tube 105, thereby cleaning the tissue or pus that is difficult to clean, and there is no need to stop the operation to adjust the suction force through the negative pressure suction machine 101.

[0039] Furthermore, after entering the circulation tube 301, the debridement material flows along the guide surface 305 of the guide tube 303 toward the axial direction of the circulation tube 301. After the airflow entering through the negative pressure hole 302 passes through the guide tube 303 and enters the interior of the circulation tube 301, its airflow direction is to first flow toward the inner wall of the guide tube 303, and then move along the axial direction of the circulation tube 301, thereby driving the debridement material to flow out from the end of the circulation tube 301 away from the suction end tube 105, and finally enter the liquid storage bottle 103 through the hose 104.

[0040] A plurality of negative pressure holes 302 are provided in a linear array along the axial direction of the circulation tube 301, and the plurality of negative pressure holes 302 are all connected to a flow guide tube 303. The plurality of negative pressure holes 302 are provided in a linear array, so that the sleeve 304 can generate suction adjustments of different gears when moving and covering, that is, covering one negative pressure hole 302 corresponds to one gear of suction adjustment.

[0041] Furthermore, multiple guide tubes 303 are arranged linearly, so that when the debridement material flows through the guide tube 303 near one end of the suction end tube 105 and enters the next guide tube 303, the debridement material will slightly diffuse to both sides and then hit the guide surface 305 of the next guide tube 303, and the distance from the position where the debridement material hits the guide surface 305 to the axis of the circulation tube 301 is less than the distance from the opening of the guide tube 303 to the axis of the circulation tube 301, thereby avoiding the debridement material flowing in the circulation tube 301 from entering the guide tube 303.

[0042] One end of the circulation tube 301 is fixedly connected to the suction end tube 105, and the other end of the circulation tube 301 is fixedly connected to the hose 104. A stopper 306 is provided at one end of the circumferential side wall of the circulation tube 301 close to the hose 104, and a return spring 307 is sleeved on the outside of the circulation tube 301.

[0043] A spring cavity 308 is defined at one end of the sleeve 304 close to the stopper 306 , and the spring cavity 308 matches the return spring 307 .

[0044] In the initial state, the return spring 307 is in a relaxed state, one end of which contacts the block 306, and the other end pushes the sleeve 304, so that the sleeve 304 is located on one side of the multiple negative pressure holes 302 in the linear array, so that the negative pressure holes 302 are all open in the initial state. During the operation, when it is necessary to adjust the suction force of the suction end tube 105, the sleeve 304 is moved toward the block 306 to cover and block the negative pressure holes 302. The number of negative pressure holes 302 moved to cover and block is selected according to actual conditions, so as to achieve different suction forces of the suction end tube 105, and when the sleeve 304 moves toward the block 306, it squeezes the return spring 307, so that after the suction end tube 105 adjusts the suction force to clear the difficult-to-clean tissue or pus, it can be reset under the action of the return spring 307, and reduced to the initial suction force for debridement, thereby protecting the patient's wound.

[0045] Furthermore, the spring chamber 308 opened at one end of the sleeve 304 prevents the reset spring 307 from being deformed and stuck outside the sleeve 304 when the sleeve 304 moves to squeeze the reset spring 307 .

[0046] A pressure rod 309 is rotatably mounted on one end of the circumferential side wall of the circulation tube 301 away from the stop block 306, and a finger ring 310 is provided on the end of the pressure rod 309 away from the rotatable connection with the circulation tube 301. A connecting rod 311 is rotatably mounted on one end of the pressure rod 309 close to the finger ring 310, and the end of the connecting rod 311 away from the pressure rod 309 is rotatably connected to the circumferential side wall of the sleeve 304.

[0047] Two pressure rods 309 are provided, and the two pressure rods 309 are symmetrically installed on one end of the circumferential side wall of the circulation tube 301 away from the stop block 306 through a rotating ear. The two pressure rods 309 are provided with a rotating ear on the side close to the circulation tube 301, and the circumferential side wall of the sleeve 304 is provided with a rotating ear. The connecting rod 311 is rotatably connected to the rotating ear on the pressure rod 309 and the rotating ear on the sleeve 304 respectively.

[0048] Furthermore, under the action of the return spring 307, the connecting rod 311 and the pressure rod 309 in the initial state are set at an obtuse angle, so that when the pressure rod 309 rotates close to the circulation tube 301, it drives the connecting rod 311 to push the sleeve 304 to move toward the block 306, thereby blocking the negative pressure hole 302 and achieving the purpose of adjusting the suction force of the suction end tube 105. Moreover, its operation can be easily performed during the operation without delaying the progress of the operation.

[0049] A limiting groove 312 is provided on the outer wall of the circumferential side wall of the circulation tube 301, and a limiting strip 313 is provided on the inner wall of the sleeve 304, and the limiting strip 313 and the limiting groove 312 are slidably matched. Through the sliding matching of the limiting strip 313 and the limiting groove 312, the sleeve 304 can only move along the axial direction of the circulation tube 301 under the push of the connecting rod 311 and will not rotate, thereby improving the stability of the pressing of the pressure rods 309 on both sides.

[0050] The shift adjustment assembly 4 includes a shift groove 401 formed on the outer wall of the circumferential side wall of the circulation tube 301 , and the shift groove 401 is composed of a stepped shift area 402 and a reset area 403 .

[0051] The stepped shifting area 402 is a stepped strip groove, and the upper end of the step of the strip groove is located at an end of the stepped shifting area 402 away from the sleeve 304 .

[0052] The reset area 403 is an arc-shaped groove, and the bottom surface of the arc-shaped groove is inclined. The reset area 403 is arranged on one side of the step gear area 402, and the reset area 403 and the step gear area 402 are connected at both ends. The high end of the inclined bottom surface of the reset area 403 is away from the sleeve 304, and the high end of the inclined bottom surface of the reset area 403 is higher than the high end of the step gear area 402 and is connected in a step-like manner. The low end of the inclined bottom surface of the reset area 403 is flush with the low end of the step gear area 402 and is gently connected.

[0053] The shift adjustment assembly 4 also includes a rotating hole 404 opened at one end of the sleeve 304 away from the return spring 307, and a shift rod 405 is rotatably installed inside the rotating hole 404. The shift rod 405 is U-shaped, and the end of the shift rod 405 away from the rotating hole 404 is slidably matched with the shift slot 401.

[0054] The cam 305 is pressed against the top of the cylinder 304 and the cam 306 is pressed against the cylinder 307, thereby releasing the pressure of the cylinder 304.

[0055] Furthermore, the end of the shift rod 405 away from the rotating hole 404 slides and matches in the shift groove 401, and when the end of the shift rod 405 is located at the highest step of the stepped shift area 402, the shift rod 405 is elastically pushed upward by the resistance of the step, so that it has a downward deformation driving force. Therefore, when the sleeve 304 moves, the shift rod 405 gradually deforms and recovers along the steps of the stepped shift area 402, so that the shift rod 405 is in contact with each step surface until the last step surface, when the shift rod 405 is in a relaxed state with no contact with the bottom surface.

[0056] It should be noted that the intersection surface between the penultimate step and the last step of the stepped shift zone 402 is an arc surface, which is used for the shift rod 405 to rotate to the reset zone 403. The gear can be locked each time the suction force is adjusted. When unlocking is required, the pressure rod 309 is gripped tightly so that the sleeve 304 drives the shift rod 405 to move to the last step of the stepped shift zone 402 and then it can be released. Under the action of the reset spring 307, the shift rod 405 located at the last step of the stepped shift zone 402 enters the reset zone 403 along the arc surface, and then the shift rod 405 is squeezed and deformed again by the inclined bottom surface of the reset zone 403, and then enters the gear position of the highest step of the stepped shift zone 402 from the reset zone 403 away from the end of the last step of the stepped shift zone 402.

[0057] In all the schemes mentioned above, the connection between the two parts can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A suction device for surgical debridement, characterized by: include, A debridement mechanism (1), comprising a negative pressure suction machine (101), a buffer bottle (102) and a liquid storage bottle (103) arranged on the negative pressure suction machine (101), a hose (104) for sequentially connecting the negative pressure suction machine (101), the buffer bottle (102) and the liquid storage bottle (103), and a suction end tube (105) connected to the liquid storage bottle (103) via the hose (104); A suction force regulating mechanism (2) comprising a negative pressure regulating assembly (3) provided on a connecting hose (104) between the liquid storage bottle (103) and the suction end tube (105), and a gear adjustment assembly (4) provided on the negative pressure regulating assembly (3); The negative pressure regulating assembly (3) comprises a circulation tube (301) connected to the suction end tube (105), a negative pressure hole (302) provided on the circulation tube (301), a flow guide tube (303) provided in the inner cavity of the circulation tube (301) and corresponding to the negative pressure hole (302), and a sleeve (304) sleeved on the outside of the circulation tube (301); A flow guiding surface (305) is provided on the flow guiding tube (303), and an opening end of the flow guiding tube (303) away from the negative pressure hole (302) is inclined. A plurality of negative pressure holes (302) are provided in a linear array along the axial direction of the circulation tube (301), and the plurality of negative pressure holes (302) are all connected to a flow guide tube (303); One end of the circulation tube (301) is fixedly connected to the suction end tube (105), and the other end of the circulation tube (301) is fixedly connected to the hose (104); A stopper (306) is provided at one end of the circumferential side wall of the circulation tube (301) close to the hose (104), and a return spring (307) is sleeved on the outside of the circulation tube (301); A spring cavity (308) is provided at one end of the sleeve (304) close to the stopper (306), and the spring cavity (308) matches the return spring (307); A pressure rod (309) is rotatably mounted on one end of the circumferential side wall of the circulation tube (301) away from the stopper (306), and a finger ring (310) is provided on the end of the pressure rod (309) away from the rotatable connection with the circulation tube (301). A connecting rod (311) is rotatably mounted on one end of the pressure rod (309) close to the finger ring (310), and the end of the connecting rod (311) away from the pressure rod (309) is rotatably connected to the circumferential side wall of the sleeve (304); The outer wall of the circumferential side wall of the circulation pipe (301) is provided with a limiting groove (312); A limiting strip (313) is provided on the inner wall of the sleeve (304), and the limiting strip (313) and the limiting groove (312) are slidably matched.

2. The suction device for surgical debridement according to claim 1, characterized in that: The shift adjustment component (4) comprises a shift groove (401) formed on the outer wall of the circumferential side wall of the circulation tube (301), and the shift groove (401) is composed of a stepped shift area (402) and a reset area (403).

3. The suction device for surgical debridement according to claim 2, characterized in that: The stepped stop zone (402) is a stepped strip groove, and the high end of the strip groove step is located at the end of the stepped stop zone (402) away from the sleeve (304).

4. The suction device for surgical debridement according to claim 3, characterized in that: The reset area (403) is an arc-shaped groove, and the bottom surface of the arc-shaped groove is inclined; The reset area (403) is arranged on one side of the stepped shift area (402), and the reset area (403) and the stepped shift area (402) are connected at both ends; The inclined high end of the bottom surface of the reset area (403) is away from the sleeve (304), and the inclined high end of the bottom surface of the reset area (403) is higher than the high end of the stepped shifting area (402) and is connected in a step-like manner. The inclined low end of the bottom surface of the reset area (403) and the low end of the stepped shifting area (402) are flush and gently connected.

5. The suction device for surgical debridement according to claim 4, characterized in that: The shift adjustment assembly (4) further comprises a rotation hole (404) formed at one end of the sleeve (304) away from the return spring (307), and a shift rod (405) is rotatably mounted inside the rotation hole (404), the shift rod (405) being U-shaped, and one end of the shift rod (405) away from the rotation hole (404) is slidably matched with the shift slot (401).

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