Surgical cutting tools

Abstract

1. A surgical cutting tool having a body having a proximal end and a distal end, a cannula rotatably extending from the distal end of the body, the cannula having a proximal end and a distal end, a cutting head removably coupled to the distal end of the cannula, the cutting head having a distal tip and a cutting window, a hollow shaft movably positioned within the cannula, the hollow shaft having a blade, a suction connector in fluid communication with the hollow shaft, the suction connector configured for connection to a suction source, a suction control configured to vary suction from the suction connector to the hollow shaft, and an actuator coupled to the hollow shaft for moving a blade of the hollow shaft relative to the cutting window of the cutting head.

Description

Technical Field

[0001] Background The present disclosure relates to an apparatus used in endoscopic surgery, and more particularly, to a tissue cutting tool with suction.

Background Art

[0002] There is a need for a surgical cutting tool that corrects the drawbacks of prior art surgical cutting tools.

Summary of the Invention

[0003] Summary The present disclosure relates to an improved tissue cutting tool. The surgical cutting tool, according to one embodiment, has a body having a proximal end and a distal end, a cannula rotatably extending from the distal end of the body, the cannula having a proximal end and a distal end, a cutting head removably coupled to the distal end of the cannula, the cutting head having a distal tip and a cutting window, a hollow shaft movably positioned within the cannula, the hollow shaft having a blade, a suction connector in fluid communication with the hollow shaft, the suction connector being configured for connection to a suction source, a suction control configured to vary suction from the suction connector to the hollow shaft, and an actuator coupled to the hollow shaft for moving the blade of the hollow shaft relative to the cutting window of the cutting head.

[0004] In one implementation, the surgical cutting tool has a plurality of interchangeable cutting heads. Optionally, at least one of the plurality of interchangeable cutting heads has a rounded distal end. At least one of the plurality of interchangeable cutting heads may have a rounded distal end and a cutting window angled toward the direction away from the rounded distal end. Optionally, at least one of the plurality of interchangeable cutting heads has an angled distal end. At least one of the plurality of interchangeable cutting heads may have an angled distal end and a cutting window angled toward the direction of the angled distal end.

[0005] Optionally, at least one of a plurality of interchangeable cutting heads may have a flat distal end and a cutting window located proximal to the flat distal end. At least one of the plurality of interchangeable cutting heads may have an angled distal end extending beyond the diameter of the cannula and a cutting window located proximal to the angled distal end.

[0006] In one embodiment, the suction control is coupled to the body and is movable between an open position for reducing suction through the hollow shaft and cutting window and a closed position for increasing suction through the hollow shaft and cutting window. The suction control may have a notched surface. In one embodiment, the body has a handle with a thumb loop and the actuator has a finger loop.

[0007] In an additional implementation, the surgical cutting tool comprises a body having a distal end, a handle located proximal to the distal end, a suction connector configured for connection to a suction source, a suction path extending from the suction connector through at least a portion of the body, and a control path in fluid communication with the suction path. A cannula rotatably extends from the distal end of the body and has a proximal and distal end. A cutting head is detachably coupled to the distal end of the cannula and has a distal tip and a cutting window. A hollow shaft is movably located within the cannula and has a blade. A suction control is slidably coupled to the body and configured to adjust the opening of the control path to change suction from the suction connector to the hollow shaft. An actuator rotatably coupled to the body and coupled to the hollow shaft to move the blade of the hollow shaft relative to the cutting window of the cutting head. In one implementation, the handle has a thumb loop, the actuator has a finger loop, and the handle and actuator are operated like scissors to move the shaft.

[0008] In one implementation, the surgical cutting tool may be used by inserting the cannula into the patient at the desired surgical site, orienting the cutting window towards the tissue to be cut, operating an actuator to move the shaft blade across the cutting window to separate the tissue extending into the cutting window, and withdrawing the cannula from the patient. Optionally, before insertion, the suction control is moved to the open position to reduce suction through the hollow shaft and cutting window. Optionally, after the cannula has been inserted into the patient, the suction control is moved to the closed position to increase suction through the hollow shaft and cutting window, drawing the tissue into the cutting window.

[0009] These and other features are listed below.

[0010] The features, aspects, and advantages of the present invention will be better understood with reference to the following description, the appended claims, and the accompanying drawings. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a side view of a surgical cutting tool in one implementation. [Figure 2] Figure 2 is an exploded side cross-sectional view of the surgical cutting tool shown in Figure 1. [Figure 3] Figure 3 is a perspective view of a surgical cutting tool in one implementation, with a portion of the housing shown as semi-transparent. [Figure 4] Figure 4 is a side cross-sectional view of a surgical cutting tool in one implementation. [Figure 5] Figure 5 is a top view of a surgical cutting tool in one operation with the suction control in the open position. [Figure 6] Figure 6 is a top view of a surgical cutting tool in one operation with the suction control in the closed position. [Figure 7] Figure 7 shows a magnified view of a portion of the cannula, shaft, and cutting head from a single implementation. [Figure 8A] Figure 8A is a side view of a cutting head for a surgical cutting tool in one implementation. [Figure 8B] Figure 8B is a perspective view of the cutting head shown in Figure 8A. [Figure 9A] Figure 9A is a side view of a cutting head for a surgical cutting tool with additional features. [Figure 9B] Figure 9B is a perspective view of the cutting head shown in Figure 9A. [Figure 10A] Figure 10A is a side view of a cutting head for a surgical cutting tool with additional features. [Figure 10B] Figure 10B is a perspective view of the cutting head shown in Figure 10A. [Figure 11A] Figure 11A is a side view of a cutting head for a surgical cutting tool with additional features. [Figure 11B] Figure 11B is a perspective view of the cutting head shown in Figure 11A. [Modes for carrying out the invention]

[0012] The following description of preferred embodiments refers to the accompanying drawings, which, for illustrative purposes, illustrate specific embodiments in which the present invention may be carried out. Wherever possible, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Naturally, other embodiments may be utilized and structural and functional modifications may be made without departing from the scope of this disclosure.

[0013] Referring to Figures 1-7, a surgical cutting tool 10 in one implementation has a body 12. The body 12 has a proximal end 14 and a distal end 16. The cannula 18 is connected to the distal end 16 of the body 12. The cannula 18 has a proximal end 20 and a distal end 22. The cutting head 24 is connected to the distal end 22 of the cannula 18. The length of the cannula 18 may vary depending on the desired application. In one implementation, the cannula 18 has a length of approximately 50 mm to approximately 150 mm. In one implementation, the cannula 18 has a length of approximately 70 mm. In one implementation, the cannula 18 has a length of approximately 130 mm.

[0014] The main body 12 has a handle 26. In one embodiment, the handle has a loop 28 for the placement of the user's fingers, such as the thumb. The actuator 30 is coupled to the main body 12. In one embodiment, the actuator 30 has a loop 32 for the placement of the user's fingers, such as the index finger. The actuator 30 is rotatably mounted to the housing, for example, by using a pin 34. The user's thumb may be placed on the handle loop 28 and the index finger on the actuator loop 32, and the handle 26 and actuator 30 may be operated as scissors. Optionally, in one embodiment, a spring is installed between the handle 26 and the actuator 30 to hold the actuator in place relative to the handle.

[0015] The proximal end 20 of the cannula 18 is coupled to the rotary hub 36. In one implementation, the rotary hub 36 is welded to the outer surface of the cannula 18. The body 12 is configured such that the rotary hub 36 fits inside the hub opening. The pin 38 extends through the body 12 and remains within the groove 40 of the rotary hub 36, preventing axial movement of the hub and the cannula 18 but allowing rotation. The groove 40 extends around the entire circumference of the rotary hub 36 and can allow 360-degree rotation of the hub and the cannula 18. Alternatively, if it is desirable to limit the rotation of the rotary hub and the cannula 18, the groove 40 may not extend around the entire circumference of the rotary hub 36.

[0016] As will be described in more detail below, the rotary hub 36 allows the cannula 18 to be rotated so that the orientation of the cutting head 24 can be changed. In one implementation, the rotary hub 36 has a knob 42 that assists the user in rotating the cannula 18. In one implementation, the knob 42 is scored or otherwise textured to assist the user in finding and turning the knob.

[0017] Located inside the cannula 18 and extending into the body 12 is a hollow shaft 44. The hollow shaft 44 has a blade 46 that cooperates with the cutting head 24, as will be further described below. The shaft 44 is coupled to the actuator 30. In one implementation, a cross pin 48 is coupled to the shaft 44. The cross pin 48 may be welded to the shaft 44. The cross pin 48 remains within the groove 50 on the actuator 30. When the actuator 30 is rotated relative to the body 12, the groove 50 moves the cross pin 48 and, along with it, the shaft 44. The shaft 44 and the blade 46 may be made of stainless steel, and the blade 46 may be made of a material different from the rest of the shaft. Additionally, the blade 46 may be removably attached to the shaft 44. The shaft 44 moves linearly within the cannula 18 and cuts tissue positioned within the cutting head 24, as will be described in more detail below.

[0018] The body 12 also has a suction port 52 for connection to a suction source (not shown). The suction port may have a barb 54 or threads for holding a suction source connector. In one implementation, the suction port 52 is located on the proximal end 14 of the body 12. As shown in FIG. 4, the suction port 52 is in fluid communication with a suction path 56 that passes through the body 12 and to the shaft 44. Further, the suction port 52 is in fluid communication with a control path 58. A suction control 60 is positioned movably on the body.

[0019] In one implementation, the suction control 60 is slidably movable between an open position and a closed position. In the open position, air may be drawn into the body 12 through the control path 58 rather than through the cutting head 24 and the shaft 44. In the closed position, suction draws air through the cutting head 24 and the shaft 44. The user may move the suction control 60 between the open position and the closed position to vary the amount of suction at the cutting head 24. The suction control 60 may be scored or otherwise textured to assist the user in identifying and operating the position of the suction control.

[0020] The cutting head 24 may vary for different applications. In one implementation, the cutting head 24 is removably coupled to the distal end 22 of the cannula 18, for example by a threaded fit. As another method, the surgical cutting tool 10 may be configured with a particular cutting head 24. As shown in FIG. 7, the cutting head 34 has a cutting window 62 with a cutting edge 64. As the shaft 44 advances through the cannula 18, the blade 46 of the shaft passes along the cutting edge 64 and separates any tissue extending into the cutting window 62. In one implementation, the blade 46 is circular so that the blade 46 can cut tissue regardless of the orientation of the cutting head 24 and the cutting window 62.

[0021] Suction can help draw tissue into the cutting window 62. Furthermore, suction can assist in removing the cut tissue from the cutting window 62 by drawing it back through the shaft 44 and out through the suction path 56 and the suction port 52. In one implementation, a tissue capture container is placed between the suction source and the suction port 52 to capture the cut tissue. In an additional implementation, a liquid or pressurized gas may be connected to the suction port 52 and to the outside through the cutting window 62.

[0022] Several cutting heads by implementation are described below. The implementations are intended to be illustrative and not restrictive. As shown in Figures 8A and 8B, a cutting head 24A by one implementation may have a diameter of about 3 mm and may be formed with a rounded distal end 66. The rounded distal end 66 may help push the surgical cutting tool 10 through the tissue to reach the surgical site. Positioned proximal to the distal end 66 is the cutting window 68. The cutting window 68 may be oriented at an angle pointing away from the distal end 66. The cutting window has a distal wall and a proximal wall separated by a flat central portion. In one implementation, the distal wall has an angle A of about 40 to about 70 degrees, more preferably about 55 degrees. In one implementation, the proximal wall has an angle B of about 30 to about 60 degrees, more preferably about 45 degrees. In one embodiment, the cutting window 68 has a depth C of about 0.03 inches to about 0.09 inches, more preferably about 0.06 inches. In one embodiment, the cutting window 68 has a length D of about 0.05 inches to about 0.15 inches, more preferably about 0.10 inches.

[0023] During use, the cutting head 24A acts like a hook, and the user moves the distal end 66 across the tissue to be cut, and then pulls the cutting head backward (with or without suction) to guide the tissue into the cutting window 68. The actuator 30 is then operated by the user to move the shaft 44 distally while the blade 46 of the shaft moves across the cutting window 68, thereby cutting any tissue within the cutting window. The cutting head 24A may be useful for hand and wrist, ENT (ear, nose and throat), spine, and other arthroscopic surgical applications. The backbiter distal tip design gives surgeons the ability to efficiently resect soft tissues such as TFCC (triangular fibrocartilage complex) in a retrograde distal-to-proximal direction using a standard portal.

[0024] As shown in Figures 9A and 9B, the cutting head 24B may have a diameter A of about 3 mm and an angled distal end 70. The angled distal end may have an undercut edge 71 with an angle B of about 0 to about 15 degrees, more preferably about 6 degrees. The remaining portion of the angled distal end 70 may have an angle C of about 20 to about 50 degrees, more preferably about 35 degrees. The angled distal end 70 can be used to lift tissue or to manipulate the cutting head 34B between two closely positioned structures.

[0025] A cutting window 72 is located approximately 0.05 inches to approximately 0.15 inches, more preferably approximately 0.11 inches proximal to the distal end 70. The cutting window 72 may be oriented at an angle pointing toward the distal end 70. In one embodiment, the cutting window is oriented at an angle D of approximately 35 degrees to approximately 65 degrees, more preferably approximately 50 degrees. The cutting window 72 has angled distal and proximal walls separated by a flat central portion. In one embodiment, the flat central portion has a length E of approximately 0.05 inches to approximately 0.15 inches, more preferably approximately 0.10 inches. In one embodiment, the distal and proximal walls are separated by a distance F of approximately 0.04 inches to approximately 0.12 inches, more preferably approximately 0.08 inches.

[0026] During use, the cutting head 34B operates like a scoop or sled, and the user moves the distal end 70 to the tissue to be cut, and then scoops the tissue into the cutting window 72 with or without suction. The actuator 30 is then operated by the user to move the shaft 44 distally, while the blade 46 of the shaft moves across the cutting window 72, to cut any tissue within the cutting window. The cutting head 24B may be useful in knee surgery applications, for example, for cutting and manipulating the edges of meniscal tissue, as well as other hard-to-reach flat tissue lesions in various arthroscopic and endoscopic surgical applications.

[0027] As shown in Figures 10A and 10B, the cutting head 24C may have a diameter of approximately 3 mm and be formed with a flat distal end 74. The flat distal end 74 may help push tissue out of the path of the cutting tool and establish a clear edge for cutting. Located proximal to the distal end 74 is the cutting window 76. The cutting window 76 may be oriented with a flat distal wall 78 that transitions into a flat inner edge 80 perpendicular to the flat distal wall. The flat inner edge 80 may transition proximal to an angled edge 82 (extending outward as the edge extends proximal). The flat distal wall 78 may have a height A of approximately 0.05 inches to approximately 0.15 inches, more preferably about 0.10 inches. The flat inner edge 80 may have a length B of approximately 0.03 inches to approximately 0.10 inches, more preferably about 0.06 inches. The proximal angled edge 82 may extend at an angle C of approximately 30 to 60 degrees, more preferably 45 degrees.

[0028] During use, the user moves the proximal distal end 78 over the tissue to be cut, and then activates suction to draw the tissue into the cutting window 76. The actuator 30 is then operated by the user to cut any tissue within the cutting window by moving the shaft 44 distally while the blade 46 of the shaft moves across the cutting window 76. The cutting head 24C allows the surgeon to perform more traditional cutting methods for procedures such as meniscectomy and necrotic tissue resection and removal of soft tissue.

[0029] As shown in Figures 11A and 11B, the cutting head 24D may be formed by a distally angled end 84 extending beyond the diameter of the cannula 18. In one embodiment, the distally angled edge has an angle A of about 65 to about 95 degrees, more preferably about 80 degrees. The distally angled edge may have a height B of about 0.10 to about 0.20 inches, more preferably about 0.15 inches. The distally extending inclined end 84 may be useful for lifting tissue or manipulating the cutting head between closely positioned structures.

[0030] The proximal surface 86 of the inclined end 84 may form the distal wall of the cutting window 88. In one embodiment, the proximal surface 86 has an angle C of about 30 to about 60 degrees, more preferably about 45 degrees. The proximal surface 86 of the inclined end 84 transitions into a flat inner edge 90 parallel to the longitudinal axis. In one embodiment, the flat inner edge has a length D of about 0.02 inches to about 0.10 inches, more preferably about 0.06 inches. The flat inner edge 90 may transition proximal to an angled edge 92 (extending outward as the edge extends proximal). In one embodiment, the inner edge 90 has an angle E of about 55 to about 85 degrees, more preferably about 70 degrees.

[0031] During use, the user moves the inclined end 84 across the section to be cut, and then activates suction to draw the tissue into the cutting window 88. The actuator 30 is then operated by the user to move the shaft 44 distally, while the blade 46 of the shaft moves across the cutting window 88, thereby cutting any tissue within the cutting window. This cutting head 24D design allows for the safe and efficient removal of bone and tissue, such as in intravertebral discectomy, without the need to remove the instrument from the spinal canal. The suction port eliminates the need for the surgeon to manually remove tissue and bone after each cut.

[0032] The use of the cutter in practice will now be described. When the suction control 58 is in the closed position, the cannula 18 of the surgical cutting tool 10 is inserted into the patient. During insertion, the actuator 30 may be used to position the shaft 44 so as to cover the cutting window 72 to prevent tissue from entering the cutting window. Once the desired position is reached, the movement of the cannula 18 stops. If necessary, the user may rotate the cannula 18 using the knob 42 to change the orientation of the cutting head 24. If necessary, the user may also move the suction control 58 to variably position the tissue within the cutting window 62 of the cutting head 24. Once the tissue to be cut is positioned within the cutting window 62, the user may operate the actuator 30 to move the shaft blade 46 across the cutting window 62 to cut the tissue. After the tissue has been cut, the user can release the actuator 30 and repeat the process to perform additional cuts or remove the cannula 18 from the patient.

[0033] Surgical cutting tools can be used, for example, in conventional and small joint arthroscopy and endoscopic procedures. Surgical cutting tools can be used in dry arthroscopic surgery without concerns about overheating. Furthermore, surgical cutting tools can be used in standard arthroscopy with inflow. Variable suction control allows the surgical cutting tool to be used in a wide range of surgical procedures. Interchangeable cutting heads allow the surgical cutting tool to be used in a wide range of surgical procedures without the need for separate instruments. In addition, the scissor grip and suction control enable versatile one-handed operation. In one implementation, the handles 26, 30 and suction control 60 are made of Radel, while the remaining components are made of stainless steel.

[0034] Surgical cutting tools and methods that completely and effectively overcome the disadvantages associated with the prior art are disclosed in the above description and drawings. However, it will be apparent that variations and modifications of the practices of this disclosure may be made without departing from the principles of the invention. The practices presented herein are provided only as examples and not as limitations, and the true scope and spirit of the invention are shown by the following claims. The following is the invention as originally described in the application. <Claim 1> It is a surgical cutting tool, A main body further comprising a proximal end and a distal end, A cannula that rotatably extends from the distal end of the main body, wherein the cannula further comprises a proximal end and a distal end, A cutting head detachably coupled to the distal end of the cannula, wherein the cutting head further comprises a distal tip and a cutting window, A hollow shaft that is movable within the cannula, wherein the hollow shaft further comprises a blade, A suction connector that communicates fluid with the hollow shaft, wherein the suction connector is configured for connection to a suction source, A suction control configured to change the suction from the suction connector to the hollow shaft, A surgical cutting tool comprising: an actuator coupled to the hollow shaft for moving the blade of the hollow shaft relative to the cutting window of the cutting head. <Claim 2> The surgical cutting tool according to claim 1, further comprising a plurality of interchangeable cutting heads. <Claim 3> The surgical cutting tool according to claim 2, wherein at least one of the plurality of interchangeable cutting heads further comprises a rounded distal end. <Claim 4> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises a rounded distal end and a cutting window oriented at an angle away from the rounded distal end. <Claim 5> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end. <Claim 6> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end and a cutting window oriented at an angle toward the angled distal end. <Claim 7> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises a flat distal end and a cutting window located proximal to the flat distal end. <Claim 8> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end extending beyond the diameter of the cannula and a cutting window positioned proximal to the angled distal end. <Claim 9> The surgical cutting tool according to claim 1, wherein the suction control is coupled to the main body and is movable between an open position for reducing suction through the hollow shaft and the cutting window and a closed position for increasing suction through the hollow shaft and the cutting window. <Claim 10> The surgical cutting tool according to claim 9, wherein the suction control has a notched surface. <Claim 11> The surgical cutting tool according to claim 1, wherein the main body further comprises a handle having a thumb loop, and the actuator further comprises a finger loop. <Claim 12> It is a surgical cutting tool, The main body, The distal end and A handle located proximal to the distal end, A suction connector, wherein the suction connector is configured for connection to a suction source, A suction path extending from the suction connector through at least a portion of the main body, The main body further comprises a control path that communicates with the aforementioned suction path, A cannula that rotatably extends from the distal end of the main body, wherein the cannula has a proximal end and a distal end, A cutting head detachably coupled to the distal end of the cannula, wherein the cutting head further comprises a distal tip and a cutting window, A hollow shaft that is movable within the cannula, wherein the hollow shaft further comprises a blade, A suction control is slidably coupled to the main body and configured to adjust the opening of the control path to change the suction from the suction connector to the hollow shaft, A surgical cutting tool comprising: an actuator rotatably coupled to the main body and coupled to the hollow shaft to move the blade of the hollow shaft relative to the cutting window of the cutting head. <Claim 13> The surgical cutting tool according to claim 12, wherein the handle further comprises a thumb loop, the actuator further comprises a finger loop, and the handle and actuator are operated as scissors to move the shaft. <Claim 14> The surgical cutting tool according to claim 12, further comprising a plurality of interchangeable cutting heads. <Claim 15> The surgical cutting tool according to claim 14, wherein at least one of the plurality of interchangeable cutting heads further comprises a rounded distal end. <Claim 16> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises a rounded distal end and a cutting window oriented at an angle away from the rounded distal end. <Claim 17> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end. <Claim 18> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end and a cutting window oriented at an angle toward the angled distal end. <Claim 19> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises a flat distal end and a cutting window located proximal to the flat distal end. <Claim 20> The surgical cutting tool according to claim 3, wherein at least one of the plurality of interchangeable cutting heads further comprises an angled distal end extending beyond the diameter of the cannula and a cutting window positioned proximal to the angled distal end. <Claim 21> A method for using a surgical cutting tool, wherein the surgical cutting tool comprises: a body further having a proximal end and a distal end; a cannula rotatably extending from the distal end of the body, the cannula having a proximal end and a distal end; a cutting head detachably coupled to the distal end of the cannula, the cutting head further comprising a distal tip and a cutting window; a hollow shaft movably positioned within the cannula, the hollow shaft further comprising a blade; a suction connector fluidly communicating with the body, the suction connector configured for connection to a suction source; a suction control configured to modify suction from the suction connector to the hollow shaft; and an actuator coupled to the hollow shaft for moving the blade of the hollow shaft relative to the cutting window of the cutting head, wherein the method is The aforementioned cannula is inserted into the patient at the desired surgical site, The cutting window is directed towards the tissue to be cut, The actuator is operated to move the shaft blade across the cutting window, thereby separating the tissue extending into the cutting window. A method of using a surgical cutting tool, comprising removing the cannula from the patient. <Claim 22> A method of using a surgical cutting tool according to claim 21, wherein the step of inserting the cannula further includes moving the suction control to the open position to reduce suction through the hollow shaft and the cutting window. <Claim 23> A method of using a surgical cutting tool according to claim 22, wherein, after inserting the cannula into a patient, the method further includes the step of moving the suction control to a closed position to increase suction through the hollow shaft and the cutting window to draw tissue into the cutting window.

Claims

1. It is a surgical cutting tool, A main body further comprising a proximal end and a distal end, A cannula that rotatably extends from the distal end of the main body, wherein the cannula further comprises a proximal end and a distal end, A cutting head detachably coupled to the distal end of the cannula, wherein the cutting head further comprises a distal tip and a cutting window, A hollow shaft that is movable within the cannula, wherein the hollow shaft further comprises a blade, A suction connector that communicates fluid with the hollow shaft, wherein the suction connector is configured for connection to a suction source, A suction path extending from the suction connector to the hollow shaft, A control path formed in the aforementioned suction path, A suction control that is slidable on the control path to open and close the control path in order to change the suction from the suction connector to the hollow shaft, An actuator coupled to the hollow shaft is used to move the blade of the hollow shaft relative to the cutting window of the cutting head. Equipped with, A surgical cutting tool wherein the suction control is coupled to the main body and is movable between an open position for reducing suction through the hollow shaft and the cutting window and a closed position for increasing suction through the hollow shaft and the cutting window.

2. The surgical cutting tool according to claim 1, wherein the cutting head is replaceable.

3. The surgical cutting tool according to claim 2, wherein the cutting head has a rounded distal end.

4. The surgical cutting tool according to claim 2, wherein the cutting head further comprises a rounded distal end and a cutting window oriented at an angle away from the rounded distal end.

5. The surgical cutting tool according to claim 2, wherein the cutting head further comprises an angled distal end.

6. The surgical cutting tool according to claim 2, wherein the cutting head further comprises an angled distal end and a cutting window directed at an angle toward the angled distal end.

7. The surgical cutting tool according to claim 2, wherein the cutting head further comprises a flat distal end and a cutting window located proximal to the flat distal end.

8. The surgical cutting tool according to claim 2, further comprising: a cutting head having an angled distal end extending beyond the diameter of the cannula; and a cutting window positioned proximal to the angled distal end.

9. The surgical cutting tool according to claim 1, wherein the suction control is coupled to the main body and is movable between an open position for reducing suction through the hollow shaft and the cutting window and a closed position for increasing suction through the hollow shaft and the cutting window.

10. The surgical cutting tool according to claim 9, wherein the suction control has a notched surface.

11. The surgical cutting tool according to claim 1, wherein the main body further comprises a handle having a thumb loop, and the actuator further comprises a finger loop.

12. It is a surgical cutting tool, The main body, The distal end and A handle located proximal to the distal end, A suction connector, wherein the suction connector is configured for connection to a suction source, A suction path extending from the suction connector through at least a portion of the main body, A main body further comprising a control path formed in the suction path that is in fluid communication with the suction path, A cannula that rotatably extends from the distal end of the main body, wherein the cannula has a proximal end and a distal end, A cutting head detachably coupled to the distal end of the cannula, wherein the cutting head further comprises a distal tip and a cutting window, A hollow shaft that is movable within the cannula, wherein the hollow shaft further comprises a blade, A suction path extending from the suction connector to the hollow shaft, A suction control that is slidable on the control path to open and close the control path in order to change the suction from the suction connector to the hollow shaft, The system comprises an actuator rotatably coupled to the main body and coupled to the hollow shaft to move the blade of the hollow shaft relative to the cutting window of the cutting head, A surgical cutting tool in which the suction control is coupled to the main body and is movable between an open position for reducing suction through the hollow shaft and the cutting window and a closed position for increasing suction through the hollow shaft and the cutting window.

13. The surgical cutting tool according to claim 12, wherein the handle further comprises a thumb loop, the actuator further comprises a finger loop, and the handle and actuator are operated as scissors to move the shaft.

14. The surgical cutting tool according to claim 12, wherein the cutting head is replaceable.

15. The surgical cutting tool according to claim 14, wherein the cutting head further comprises a rounded distal end.

16. The surgical cutting tool according to claim 14, wherein the cutting head further comprises a rounded distal end and a cutting window oriented at an angle away from the rounded distal end.

17. The surgical cutting tool according to claim 14, wherein the cutting head further comprises an angled distal end.

18. The surgical cutting tool according to claim 14, wherein the cutting head further comprises an angled distal end and a cutting window directed at an angle toward the angled distal end.

19. The surgical cutting tool according to claim 14, wherein the cutting head further comprises a flat distal end and a cutting window located proximal to the flat distal end.

20. The surgical cutting tool according to claim 14, wherein the plurality of cutting heads further comprises an angled distal end extending beyond the diameter of the cannula and a cutting window positioned proximal to the angled distal end.

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