A debridement device for human pathologic tissue

Abstract

The application discloses a debridement device for human pathological tissues, which comprises an insertion tube, a rotary cutting head and an operating handle. The insertion tube comprises an inner tube and an outer tube sleeved outside the inner tube. A suction cavity is formed in the inner tube, and a flushing cavity is formed between the inner tube and the outer tube. The rotary cutting head comprises a shell and a rotary cutting head arranged in the shell. The interior of the shell is communicated with the suction cavity. A rotary cutting opening for exposing the rotary cutting head is formed on the shell. A notch corresponding to the rotary cutting opening is formed on the outer tube. The operating handle is connected with the insertion tube and the rotary cutting head, so as to control the rotary cutting head to cut the human tissues at the rotary cutting opening, suck the dirt from the suction cavity and flush the rotary cutting head through the flushing cavity. The device can realize the rotary cutting and suction of the human pathological tissues at the same time, reduces the residue of the necrotic substances, effectively protects the surrounding normal tissues and blood vessels, reduces the possibility of repeated operations of the patient, and improves the efficiency, effect and safety of the minimally invasive treatment.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to the field of interventional medical devices, specifically a debridement device for debridement of diseased tissues in the human body. Background Technology

[0002] Acute pancreatitis (AP) is a common digestive system disease. Most patients experience mild and self-limiting symptoms. However, 15%-25% of AP patients progress to severe acute pancreatitis (SAP), characterized by pancreatic and surrounding tissue necrosis and multiple organ failure, with a mortality rate as high as 10%-30%. A significant proportion of deaths in severe pancreatitis patients are due to infection accompanying the difficult-to-remove peripancreatic necrotic material during the necrotic infection stage. Timely and effective removal of necrotic and infected material from the pancreas and surrounding tissues is a key factor in the treatment outcome. In recent years, with the development of minimally invasive techniques, some patients can avoid the more invasive open surgery and opt for minimally invasive procedures such as percutaneous catheter drainage (PCD), minimally invasive retroperitoneal pancreatic necrotic tissue resection (MARPN), and laparoscopic-assisted drainage, reducing tissue damage and complications. The minimally invasive treatment currently used in clinical practice mainly involves laparoscopic-assisted fine needle puncture to locate the abscess cavity, percutaneous drainage of necrotic fluid, opening the abscess cavity, and using long foreign body forceps and suction devices to remove necrotic tissue and pus.

[0003] However, due to the fragility and difficulty in removing necrotic tissue in acute pancreatitis, and the viscous pus easily clogging the suction device, debridement is often ineffective, leaving residual necrotic tissue unremoved. This inevitably requires secondary or even multiple surgeries, increasing patient suffering, affecting treatment outcomes, prolonging hospital stays, and imposing a heavy financial burden. Furthermore, the removal of necrotic tissue carries the risk of damaging major blood vessels and causing massive bleeding. Therefore, there is an urgent clinical need for a safe and efficient surgical instrument for removing necrotic and infected tissue in acute pancreatitis. Summary of the Invention

[0004] This invention provides a debridement device for human diseased tissue. This device can simultaneously perform rotary cutting and suction of human diseased tissue, reduce necrotic residue, effectively protect surrounding normal tissue and blood vessels, reduce the possibility of patients needing repeated surgeries, and improve the efficiency, effectiveness and safety of minimally invasive treatment.

[0005] This invention provides a debridement device for human diseased tissue, comprising an insertion tube, a rotary cutting head, and an operating handle. The insertion tube includes an inner tube and an outer tube sleeved outside the inner tube. A suction chamber is formed inside the inner tube, and a flushing chamber is formed between the inner tube and the outer tube. The rotary cutting head includes a housing and a rotary cutting blade disposed within the housing. The interior of the housing communicates with the suction chamber. A rotary cutting opening is formed on the housing to expose the rotary cutting blade. A notch corresponding to the rotary cutting opening is formed on the outer tube. The operating handle is connected to the insertion tube and the rotary cutting head to control the rotary cutting blade to cut human tissue at the rotary cutting opening, to suction waste from the suction chamber, and to flush the rotary cutting head through the flushing chamber.

[0006] Furthermore, the rotary cut is located on the side of the housing, and the top of the housing is a blind end and is arc-shaped.

[0007] Furthermore, the operating handle is provided with a negative pressure suction port, and the end of the suction chamber away from the rotary cutter head is connected to the negative pressure suction port. The suction bottle and the suction device form a negative pressure in the suction chamber through the negative pressure suction port.

[0008] Furthermore, the rotary cutting head is rotatably disposed within the housing about its own axis.

[0009] Furthermore, the rotary cutting head includes a rotating shaft, one end of which is connected to the rotary cutting head, and the other end is connected to a drive component in the operating handle. The drive component drives the rotary cutting head to rotate via the rotating shaft.

[0010] Furthermore, a partition is provided between the inner tube and the outer tube to divide the rinsing chamber into a first rinsing channel and a second rinsing channel. The opening of the first rinsing channel at the end away from the operating handle is located at the end of the rotary cutting head near the insertion tube and at the location of the rotary cutting opening on the housing. The end of the outer tube away from the operating handle is not closed to the housing. The second rinsing channel is formed at the rotary cutting head between the side wall of the outer tube and the housing. The opening of the second rinsing channel is located at the end of the housing away from the operating handle.

[0011] Furthermore, the two ends of the outer tube are flush with the upper and lower ends of the housing where the rotary cut is not provided.

[0012] Furthermore, the inner tube is provided with a plurality of connecting holes that connect the suction chamber and the flushing chamber, and a flow direction control structure is provided on the connecting holes to allow the flushing fluid to enter the suction chamber unidirectionally from the flushing chamber.

[0013] Furthermore, a curved section and a guide wire connected to the curved section are provided on the insertion tube. The curved section is located on the insertion tube near the rotary cutting head. The curved section is connected to the guide wire control structure on the operating handle through the guide wire. The length of the guide wire is controlled by the operating handle to control the degree of bending of the curved section.

[0014] Furthermore, the guide wire control structure includes a rotating gear, the guide wire is wound around the rotating gear, and a fixing structure is provided on the rotating gear to fix the rotation angle of the rotating gear.

[0015] In summary, in this invention, when performing debridement of human diseased tissue, the debridement device can be inserted into the location of the diseased tissue through a laparoscopic surgical incision, ensuring the position of the rotary incision corresponds to the diseased tissue. Then, the rotary cutting head is controlled by the operating handle to cut the diseased tissue. Simultaneously, the rotary incision and surrounding area are rinsed through the irrigation chamber, and the cut diseased tissue and rinsing wastewater are suctioned out through the suction chamber, thus completing the debridement of the human diseased tissue. This device can simultaneously achieve rotary cutting and suction of human diseased tissue, reducing residual necrotic material and effectively protecting surrounding normal tissues and blood vessels, reducing the likelihood of repeated surgeries for the patient, and improving the efficiency, effectiveness, and safety of minimally invasive treatment.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of a wound cleaning device for human diseased tissue provided in an embodiment of the present invention.

[0018] Figure 2 As shown Figure 1 A schematic diagram of the structure of the rotary cutting head.

[0019] Figure 3 As shown Figure 2 A schematic diagram of the housing of the rotary cutting head.

[0020] Figure 4 As shown Figure 2 A schematic diagram of the rotary cutting head at the center of the rotary cutting head.

[0021] Figure 5 As shown Figure 1 A schematic diagram of the structure after the central rotary cutting head is combined with the insertion tube.

[0022] Figure 6 As shown Figure 5 A schematic diagram of the structure of the first flushing channel.

[0023] Figure 7 As shown Figure 5 A schematic diagram of the structure of the second flushing channel.

[0024] Figure 8 The diagram shows a cross-sectional view of the junction between the operating handle and the insertion tube. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] This invention provides a debridement device for human diseased tissue. This device can simultaneously perform rotary cutting and suction of human diseased tissue, reduce necrotic residue, effectively protect surrounding normal tissue and blood vessels, reduce the possibility of patients needing repeated surgeries, and improve the efficiency, effectiveness and safety of minimally invasive treatment.

[0027] Figure 1 The diagram shown is a structural schematic of a debridement device for human diseased tissue provided in an embodiment of the present invention. Figure 2 As shown Figure 1 Schematic diagram of the structure of the rotary cutting head. Figure 3 As shown Figure 2 A schematic diagram of the shell structure of the rotary cutting head. Figure 4 As shown Figure 2 A schematic diagram of the structure of the rotary cutting head at the rotary cutting head (for ease of illustration, in...). Figure 4 (The middle section omits part of the shell structure). For example... Figures 1 to 4 As shown, the debridement device for human diseased tissue provided in this embodiment of the invention includes an insertion tube 10, a rotary cutting head 20, and an operating handle 30. The insertion tube 10 includes an inner tube 11 and an outer tube 12 sleeved outside the inner tube 11. A suction chamber 13 is formed inside the inner tube 11, and a flushing chamber 14 is formed between the inner tube 11 and the outer tube 12. The rotary cutting head 20 includes a housing 21 and a rotary cutting blade 22 disposed within the housing 21. The interior of the housing 21 communicates with the suction chamber 13 of the inner tube 11. A rotary cutting opening 23 is formed on the housing 21 to expose the rotary cutting blade 22, and a notch corresponding to the rotary cutting opening 23 is formed on the outer tube 12, allowing the rotary cutting blade 22 to directly contact human tissue. The operating handle 30 is connected to the insertion tube 10 and the rotary cutting head 20 to control the rotary cutting head 20 to cut the human tissue at the rotary cutting opening 23, to suction waste from the suction chamber 13, and to flush the rotary cutting head 20 through the flushing chamber 14.

[0028] In this embodiment, during debridement of human diseased tissue, the debridement device can be inserted into the location of the diseased tissue through the laparoscopic surgical incision, aligning the position of the rotary incision 23 with the diseased tissue. Then, the rotary cutting head 20 is controlled by the operating handle 30 to cut the human diseased tissue. Simultaneously, the rotary incision 23 and surrounding areas are rinsed through the irrigation chamber 14, and the cut diseased tissue and rinsing wastewater are suctioned out through the suction chamber 13, thus completing the debridement of the human diseased tissue. This device can simultaneously achieve rotary cutting and suction of human diseased tissue, reducing necrotic residue and effectively protecting surrounding normal tissues and blood vessels, reducing the likelihood of repeated surgeries for the patient, and improving the efficiency, effectiveness, and safety of minimally invasive treatment.

[0029] Furthermore, in this embodiment, the rotary cutting opening 23 is disposed on the side of the housing 21, and the end of the housing 21 of the rotary cutting head 20 is a blind end with an arc-shaped transition at its top. Through the above-mentioned arrangement, the rotary cutting head 22 can be accommodated in the housing 21 and only contact the diseased tissue through the rotary cutting opening 23. This can protect normal tissues and blood vessels during the operation and can prevent the rotary cutting head 22 from accidentally injuring human tissues in other parts of the body.

[0030] The rotary cutting opening 23 can be in the form of a chamfered rectangle, a circle, an ellipse, etc., to provide a channel for necrotic material to enter the rotary cutting head 20.

[0031] A negative pressure suction port 31 is provided on the operating handle 30. The end of the suction chamber 13 away from the rotary cutting head 20 is connected to the negative pressure suction port 31. The suction bottle 41 and the suction device 42 can generate negative pressure in the suction chamber 13 through the negative pressure suction port 31. When the rotary cutting head 22 cuts off the diseased tissue, the suction chamber 13 can directly suck out the cut-off diseased tissue to prevent the suction chamber 13 from becoming blocked.

[0032] The rotary cutting head 22 is rotatably mounted on the housing 21 about its own axis relative to the housing 21.

[0033] Preferably, the rotary cutting head 22 can be a double-bladed serrated blade to better cut the diseased tissue.

[0034] Furthermore, in this embodiment, in order to make the rotary cutting head 22 rotatably mounted on the housing 21, an annular groove (not shown) can be provided on the inner sidewall of the housing 21. Part of the rotary cutting head 22 can be rotatably extended into the groove to fix the rotary cutting head 22 and to provide guidance for the rotation of the rotary cutting head 22.

[0035] A connecting component 24 is provided at one end of the housing 21 facing the inner tube 11. The connecting component 24 can be connected to the end of the inner tube 11 by means of threads, so as to facilitate the replacement of the rotary cutter head 20.

[0036] The rotary cutting head 20 also includes a rotating shaft 25 (see...). Figure 8 One end of the rotating shaft 25 is connected to the rotary cutting head 22, and the other end is connected to the drive component, such as a motor, inside the operating handle 30, so as to control the rotation direction and rotation speed of the rotary cutting head 22 through the operating handle 30.

[0037] Figure 5 As shown Figure 1 A schematic diagram of the structure after the central rotary cutting head is combined with the insertion tube. Figure 6 As shown Figure 5 A schematic diagram of the structure of the first flushing channel. Figure 7 As shown Figure 5 A schematic diagram of the structure of the second flushing channel. Figure 8 The diagram shown is a cross-sectional view of the junction between the operating handle and the insertion tube. Please refer to the diagram below. Figure 1 , Figures 5 to 8 In this embodiment, a partition 15 is provided between the inner tube 11 and the outer tube 12 to divide the flushing chamber 14 into a first flushing channel 141 and a second flushing channel 142. The opening of the first flushing channel 141, at the end away from the operating handle 30, is located at the end of the rotary cutting head 20 near the insertion tube 10 and at the location of the rotary cutting opening 23 on the housing 21, to flush away lesions and pus blocking the rotary cutting opening 23. The end of the outer tube 12 away from the operating handle 30 is not closed to the housing 21. The second flushing channel 142 is formed at the rotary cutting head 20 between the outer tube 12 and the side wall of the housing 21, that is, between the outer tube 12 and the solid part of the housing 21 without the rotary cutting opening 23. The opening of the second flushing channel 142 is located at the end of the housing 21 away from the operating handle 30, to flush away lesions and pus from the patient's body. By setting up two flushing channels, flushing fluid with different flow rates and pressures can be provided to different areas.

[0038] Furthermore, the two ends of the outer tube 12 are flush with the ends of the housing 21 where there is no spiral cut 23, that is, the opening of the second flushing channel 142 is located at the end of the housing 21 where there is no spiral cut 23, so as to facilitate the insertion of the insertion tube 10 and the flushing of the human diseased tissue and surrounding area.

[0039] Furthermore, in the long axis direction of the insertion tube 10, the position of the partition 15 is flush with the end face of the opening of the rotary cut 23 and extends along the long axis direction of the insertion tube 10.

[0040] A rinsing port 32 is provided on the operating handle 30. The rinsing port 32 is connected to the pump body 43 and the first rinsing channel 141 and the second rinsing channel 142. Through the rinsing port 32, the pump body 43 can inject rinsing fluid, such as physiological saline, into the first rinsing channel 141 and the second rinsing channel 142 respectively to rinse the rotary cutting head 20.

[0041] Furthermore, the inner tube 11 of the insertion tube 10 is provided with multiple connecting holes 111 that connect the suction chamber 13 and the flushing chamber 14. A flow control structure, such as a one-way valve or a one-way membrane, is provided on the connecting holes 111 to allow the flushing fluid to enter the suction chamber 13 from the flushing chamber 14 in one direction, to flush the human tissue in the suction chamber 13 and prevent the human tissue from clogging the suction chamber 13.

[0042] Furthermore, in this embodiment, the insertion tube 10 can be cylindrical in shape to facilitate insertion.

[0043] Furthermore, a bending portion 16 and a guide wire (not shown) connected to the bending portion 16 are also provided on the insertion tube 10. The bending portion 16 can be made of elastic material and is located on the insertion tube 10 near the rotary cutting head 20. The guide wire can be placed in the flushing chamber 14 or directly embedded in the channel inside the outer tube 11 and connected to the guide wire control structure on the operating handle 30. The length of the guide wire is controlled by the operating handle 30 to control the degree of bending of the insertion tube 10.

[0044] Furthermore, the guidewire control structure may include a rotating gear, on which the guidewire is wound. A fixing structure is also provided on the rotating gear to fix its rotation angle. The guidewire can be tightened or loosened by rotating the gear to adjust the curvature of the bending section 16, adapting to the location of the diseased tissue. When the rotary cutting head 20 is adjusted to the appropriate position, the rotation angle of the rotating gear is locked by the fixing structure to perform the cleaning operation.

[0045] Alternatively, the fixing structure can be a snap-on structure, a magnetic structure, etc.

[0046] Please continue to refer to Figure 1 The operating handle 30 is also equipped with a rotation speed adjustment button 351, a flushing water pressure adjustment button 353, and a bending adjustment knob 354, so as to adjust parameters such as the rotation direction and speed of the rotary cutting head 22 of the wound cleaning device, the negative pressure in the suction chamber 13, the flow rate and pressure of the flushing fluid in the flushing chamber 14, and the bending degree of the insertion tube 10.

[0047] When performing debridement surgery on lesion tissue using the human lesion tissue debridement device provided by the present invention, the insertion tube 10 can be inserted into the human body first, and the degree of curvature of the insertion tube 10 can be adjusted so that the lesion tissue comes into contact with the location of the rotary incision 23; then the rotary cutting head 22 is controlled to cut the lesion tissue; at the same time, the cut lesion tissue is sucked out through the suction chamber 13, and the rotary incision 23 and the surrounding human tissue are rinsed through the flushing chamber 14. After the debridement is completed, the insertion tube 10 is removed to complete the surgery.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A debridement device for human diseased tissue, characterized in that: The device includes an insertion tube, a rotary cutting head, and an operating handle. The insertion tube comprises an inner tube and an outer tube sleeved outside the inner tube. A suction chamber is formed inside the inner tube, and a rinsing chamber is formed between the inner tube and the outer tube. The rotary cutting head includes a housing and a rotary cutting head disposed within the housing. A connecting assembly is provided at one end of the housing facing the inner tube, and the housing is connected to the end of the inner tube via the connecting assembly. The interior of the housing communicates with the suction chamber. A rotary cutting opening is formed on the housing to expose the rotary cutting head, and a notch corresponding to the rotary cutting opening is formed on the outer tube. An annular groove is provided on the inner sidewall of the housing, and part of the rotary cutting head can be rotatably extended into the groove. The operating handle is connected to the insertion tube and the rotary cutting head to control the rotary cutting head to cut human tissue at the rotary cutting opening, to suck up dirt from the suction chamber, and to pass through the... The rinsing chamber rinses the rotary cutting head, which is rotatably mounted inside the housing around its own axis. The rotary cutting head includes a rotating shaft, one end of which is connected to the rotary cutting head, and the other end is connected to a drive component in the operating handle. The drive component drives the rotary cutting head to rotate via the rotating shaft. A partition is provided between the inner tube and the outer tube to divide the rinsing chamber into a first rinsing channel and a second rinsing channel. The opening of the first rinsing channel, at the end away from the operating handle, is located at the end of the rotary cutting head near the insertion tube and at the location of the rotary cutting opening on the housing. The end of the outer tube away from the operating handle is not closed to the housing. The second rinsing channel is formed at the rotary cutting head between the outer tube and the side wall of the housing, and the opening of the second rinsing channel is located at the end of the housing away from the operating handle.

2. The debridement device for human diseased tissue according to claim 1, characterized in that: The rotary cut is located on the side of the housing, and the top of the housing is a blind end and is arc-shaped.

3. The debridement device for human diseased tissue according to claim 1, characterized in that: The operating handle is provided with a negative pressure suction port. The end of the suction chamber away from the rotary cutter head is connected to the negative pressure suction port. The suction bottle and the suction device form a negative pressure in the suction chamber through the negative pressure suction port.

4. The debridement device for human diseased tissue according to claim 1, characterized in that: The two ends of the outer tube are flush with the ends of the shell where the rotary cut is not provided.

5. The debridement device for human diseased tissue according to claim 1, characterized in that: The inner tube is provided with a plurality of connection holes that connect the suction chamber and the flushing chamber. A flow direction control structure is provided on the connection holes to allow the flushing fluid to enter the suction chamber from the flushing chamber in one direction.

6. The debridement device for human diseased tissue according to claim 1, characterized in that: The insertion tube is provided with a curved section and a guide wire connected to the curved section. The curved section is located on the insertion tube near the rotary cutting head. The curved section is connected to the guide wire control structure on the operating handle through the guide wire. The length of the guide wire is controlled by the operating handle to control the degree of bending of the curved section.

7. The debridement device for human diseased tissue according to claim 6, characterized in that: The guide wire control structure includes a rotating gear, the guide wire is wound around the rotating gear, and a fixing structure is provided on the rotating gear to fix the rotation angle of the rotating gear.

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