Plasma scalpel

Abstract

The invention discloses a plasma scalpel in the technical field of medical instruments. The plasma scalpel comprises a handle and a scalpel body. The cutter body comprises a metal tube, and the middle section and the front end of the metal tube are each rotationally provided with an adjusting shifting piece through an adjusting rotating shaft; the middle part of the handle is rotatably connected with a rotary drum, and a middle adjusting dial wheel and an end adjusting dial wheel are rotatably mounted in the rotary drum in an up-down staggered manner; a reversing wheel is arranged in the handle; the side wall of the handle is fixedly connected with a stabilizing piece, and the side face of the stabilizing piece is provided with an end control key, a middle control key and a rotating key used for controlling the cutter body to rotate. The bending degree and direction of the metal tube are controlled, so that the metal tube can reach the wounded part more accurately; the bend at the end of the metal tube can be better aligned with an affected part, the bend in the middle can adapt to the structure of a human body, the scalpel head can rotate to any position without rotating the handle, the operation process is greatly simplified, the operation accuracy and operability are improved, and pain of a patient is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a plasma scalpel. Background Art

[0002] Low-temperature plasma scalpels are widely used at home and abroad because of their advantages such as high safety, short operation time and less trauma. However, due to different individual physical conditions and different thickness and distribution of fat layers, when using plasma scalpels in the abdominal cavity, it is often necessary to switch the blade to different angles as the operation progresses to avoid or reduce damage to the patient's healthy tissues.

[0003] However, the existing scalpels have fixed specifications or fixed changing angles, which makes it difficult for the scalpel to flexibly switch to a suitable angle to achieve the purpose of cutting when facing a complex fat layer or abdominal cavity environment.

[0004] Based on this, the present invention designs a plasma scalpel to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a plasma scalpel to solve the problem raised in the above-mentioned background technology that it is difficult to meet the need for flexible change of the position of the blade head during surgery so as to accurately reach the affected area for surgery, and it is even more difficult to reach some more hidden cavities, making it difficult to perform effective surgical treatment.

[0006] To achieve the above object, the present invention provides the following technical solution: a handle and a blade body, wherein the blade body is installed in the handle and the end portion extends outward, and an electrode is installed at the front end of the blade body and is electrically connected to the wire in the handle;

[0007] The blade body comprises a metal tube, wherein the middle section and the front end of the metal tube are both provided with adjusting paddles which are rotated by adjusting the rotating shaft, and the adjusting paddles are rotated to change the curvature and bending direction of the metal tube;

[0008] The middle part of the handle is rotatably connected to a rotating cylinder, the rotating cylinder is located at the upper end of the metal tube and the two are fixedly connected, a middle adjustment dial wheel and an end adjustment dial wheel are staggered and rotatably installed in the rotating cylinder, and the middle adjustment dial wheel and the end adjustment dial wheel are used to control the rotation of the adjustment shaft in the middle section and the front end of the metal tube respectively, thereby driving the adjustment paddle to rotate;

[0009] A reversing wheel installed in the handle, the reversing wheel is used to drive the rotating drum to rotate and drive the cutter body to rotate;

[0010] A stabilizing plate is fixedly connected to the side wall of the handle, and the side of the stabilizing plate is provided with end control keys and middle control keys for controlling the bending direction and curvature of the knife body and a rotation key for controlling the rotation of the knife body.

[0011] In an optional embodiment of the present invention, the middle adjustment dial and the adjustment shaft at the middle section of the metal tube are connected with the end adjustment dial and the adjustment shaft at the end of the metal tube via a toothed belt or chain.

[0012] In an optional embodiment of the present invention, the outer rotating sleeve of the rotating drum is provided with an upper ring sleeve and a lower ring sleeve, and the ends of the upper ring sleeve and the lower ring sleeve that are close to each other are fixedly connected with a gear ring. The upper ring sleeve and the lower ring sleeve are respectively located at the upper and lower ends of the rotating drum, and the upper ring sleeve is located above the middle adjustment dial wheel and meshes with the middle adjustment dial wheel through the gear ring, and the lower ring sleeve is located below the end adjustment dial wheel and meshes with the end adjustment dial wheel through the gear ring.

[0013] In an optional embodiment of the present invention, the stabilizing sheet is hollow, and two sets of sliding windows are opened on the side for the end control keys and the middle control keys to pass through respectively;

[0014] Two sets of intermediate gears are rotatably connected to the stabilizing plate, wherein the intermediate gears are arranged on the upper and lower sides and mesh with the gear rings of the upper ring sleeve and the lower ring sleeve respectively to drive the upper ring sleeve and the lower ring sleeve to rotate respectively;

[0015] A control slide bar is slidably connected to the inner side of the stabilizing plate. The control slide bar passes through the sliding window through the connecting plate and is fixedly connected to the end control key and the middle control key respectively to drive the intermediate gear to rotate. Elastic parts are provided between the end control key, the middle control key and the stabilizing plate to make the control slide bar disengage from the intermediate gear.

[0016] In an optional embodiment of the present invention, a support plate is provided in the sliding window, an elastic member is fixedly connected between the support plate and the bottom of the sliding window, and the support plate and the connecting plate are slidably matched to support and reset the control slide bar.

[0017] In an optional embodiment of the present invention, the rotating bottom is fixedly connected to a top ring, the top ring is meshed with the reversing wheel, and a driving motor is installed in the stabilizing plate, and the driving motor is used to drive the reversing wheel to rotate;

[0018] A contact piece installed in the stabilizing piece and a rotation key slidably connected to the side of the stabilizing piece of the handle, wherein the contact piece is used to make the driving motor rotate when the rotation key is pressed and in contact with the rotation key.

[0019] In an optional embodiment of the present invention, a bottom washer is fixedly connected inside the handle, a fixing ring is slidably connected thereto, and a fixing spring is installed between the bottom washer and the fixing ring;

[0020] An extension piece fixed to a side of the fixing ring, the extension piece extending outwardly into the stabilizing piece;

[0021] A wedge-shaped push block fixedly connected to the side wall of the rotating key, the wedge-shaped push block is located above the extension piece and is used to press down the fixing ring when the rotating key is pressed;

[0022] The magnetic ring and the conical ring are fixedly connected to the top of the fixed ring. The conical ring is used to insert the bottom fixed rotating drum in the rotating drum. The magnetic ring is used to absorb and rotate the bottom fixed rotating drum. The magnetic ring and the conical ring are used to limit the rotation of the rotating drum.

[0023] In an optional embodiment of the present invention, a guide tube is disposed outside the metal tube and a suction tube is disposed outside the guide tube;

[0024] An electric ring installed in the handle, the electric ring is located outside the metal tube and is electrically connected thereto so that the electrodes of the cutter head are energized, and an insulating layer is provided inside and outside the metal tube;

[0025] The guide sleeve and the suction sleeve are installed in the handle, the guide sleeve is located at the top of the guide tube, the two are rotatably connected with the inner ring and the metal tube for rotational sealing, and the suction sleeve is located at the top of the suction sleeve, the two are rotatably connected with the inner ring and the guide tube for rotational sealing;

[0026] A wire, an injection tube and a suction tube are respectively led out from the sides of the electric ring, the guide sleeve and the suction sleeve. The wire, the injection tube and the suction tube are arranged through a stabilizing sheet and then pass through the top of the handle.

[0027] In an optional embodiment of the present invention, an installation cavity is provided at the top of the handle, and the installation cavity is used for wiring and fixing of wires, injection tubes and suction tubes and installation and fixing of electronic components. A gripping surface is provided on the outside of the handle, and a middle shell is installed outside the stabilizing plate, and the middle shell is used to protect the rotating drum inside.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. During surgery, the bending degree and direction of the metal tube can be flexibly and steplessly controlled according to the different surgical sites, so as to reach the injured area more accurately; the bend at the end of the metal tube can better align with the affected area, and the bend in the middle can adapt to the human body structure, making it easier to penetrate the human body, reduce stimulation, facilitate the placement of the blade, and reduce discomfort when the blade enters.

[0030] 2. It can reach the affected area in a relatively hidden cavity. At the same time, the blade does not need to be pulled out of the body during adjustment. With the assistance of other instruments, it can be adjusted directly at the affected area in the body. It can be adjusted in place at one time without considering the problem of inserting the blade after bending. There is no need to repeatedly take out the blade for bending and testing insertion, which greatly simplifies the surgical process, improves surgical accuracy and operability, and reduces the patient's pain.

[0031] 3. The blade head can be rotated to any position without rotating the handle, making up for the deficiencies in other directions, which is very beneficial to the stability of the handle during the operation. When the blade head needs to be rotated, the handle will not have irregular front, back, left, and right displacements, greatly reducing the risk of touching other healthy tissues during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall structure of the present invention without the middle shell;

[0034] Figure 3 This is a schematic diagram of the middle bending of the present invention;

[0035] Figure 4 This is a schematic diagram of the end bending use of the present invention;

[0036] Figure 5 This is a schematic diagram of the middle and end portions of the present invention being bent together for use;

[0037] Figure 6 It is a schematic diagram of the knife body of the present invention being used after being bent and rotated;

[0038] Figure 7 It is a schematic diagram of the half-section and partial enlarged structure of the present invention from a side view;

[0039] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle part A;

[0040] Fig. 9 It is a half-section and partial enlarged structural diagram of the handle's stabilizing plate;

[0041] Fig.10 It is a schematic diagram of the half-section and partial enlarged structure from a frontal perspective.

[0042] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0043] 1. Handle; 101. Intermediate gear; 102. Control slide; 103. Connecting plate; 104. Support plate; 105. Mounting cavity; 106. Middle shell; 2. Cutter body; 201. Metal tube; 202. Adjustment shaft; 203. Adjustment paddle; 204. Guide tube; 205. Suction tube; 206. Electric ring; 207. Guide sleeve; 208. Suction sleeve; 209. Toothed belt; 6. Drum; 601. Middle adjustment Dial wheel; 602, end adjustment dial wheel; 603, reversing wheel; 604, upper ring sleeve; 605, lower ring sleeve; 606, gear ring; 607, drive motor; 608, contact piece; 609, wedge-shaped push block; 10, stabilizing piece; 11, end control key; 12, middle control key; 13, rotation key; 24, bottom gasket; 25, fixing ring; 26, fixing spring; 27, extension piece; 28, magnetic ring; 29, conical ring. DETAILED DESCRIPTION

[0044] See also Figure 1-10 The working principle of the technical solution provided by the present invention is as follows:

[0045] See also Figure 1-2 When in use, hold the handle 1, with the thumb at the gripping surface, the middle finger and the ring finger clamping the lower part of the handle 1, and between the thumb and the index finger is a stabilizing sheet 10, which can be convenient for gripping and increase the gripping area, making the knife more stable, and the buttons are arranged on the stabilizing sheet 10, which can be operated by the thumb, which is more convenient; the knife body can be turned on by the main switch to energize the knife head, and the energy output can be adjusted by the up and down keys;

[0046] Adjustment of blade bending

[0047] See also Figure 1-6 During surgery, the bending degree and direction of the metal tube 201 can be controlled according to the different surgical sites so as to reach the injured site more accurately; the bending at the end of the metal tube 201 can better align with the injured site, and the bending in the middle can adapt to the human body structure, thereby making it easier to penetrate the human body and reduce stimulation. For example, when treating the abdominal cavity and throat, it is often necessary to bend the blade into a curve that fits the throat, abdominal cavity opening, etc., so as to facilitate the insertion of the blade and reduce discomfort when the blade enters.

[0048] See also Figure 7-10 Here, taking the adjustment of the end of the metal tube 201 as an example, by manually pressing the end control key 11, the inner control slide bar 102 is driven to move inward and mesh with the middle gear 101. At this time, the end control key 11 is pulled down to drive the middle gear 101 to rotate, thereby driving the lower ring sleeve 605 meshing with it to rotate, and driving the end adjustment dial 602 to rotate, and finally driving the adjustment shaft 202 near the bottom of the metal tube 201 to rotate, so that the end of the adjustment paddle 203 swings close to the inner wall of the metal tube 201 and then lifts it up and bends it, so that the metal tube 201 is bent, and the end blade head is tilted, so that it can accurately reach the affected area;

[0049] When the end control key 11 is pulled down to the limit position, the end control key 11 can be released. Under the action of the support plate 104 in the sliding window and the elastic member between the end control key 11 and the stabilizing plate 10, the end control key 11 is ejected outward and pushed up to reset, thereby driving the control slide bar 102 to reset upward on the premise of being away from the middle gear 101. During the upward movement, the middle gear 101 will not rotate in the opposite direction, so that the end control key 11 can be pressed and pulled down again, thereby driving the end adjustment paddle 203 to rotate again, further tilting the cutter head, so that the metal tube 20 1 is more curved (in the specific implementation, the curvature of the metal tube 201 is closely related to the position of the control key 11, that is, the curvature of the metal tube 201 can be changed steplessly by the control key 11), and the blade head can be tilted to any desired curvature repeatedly, so that it can reach the affected part of the relatively hidden cavity. At the same time, the blade body does not need to be pulled out of the body during adjustment. With the assistance of other instruments, it can be directly adjusted at the affected part in the body, and can be adjusted to the right place at one time without considering the problem of inserting the blade body after bending, and there is no need to repeatedly take out the blade body for bending test and insertion, which greatly simplifies the surgical process, improves the surgical accuracy and improves the operability.

[0050] The adjustment of the curvature of the middle part of the metal tube 201 is based on the same adjustment principle as that of its end parts. By pressing the middle control button 12 and then pressing it down, the middle adjustment paddle 203 is driven to swing, thereby bending the metal tube 201. The bending here can facilitate the insertion of the blade, so that the blade can adapt to the shape of the human body's inner cavity, and the blade head can reach deeper into the human body. The bending degree of the metal tube 201 can be adjusted while the blade is inserted, thereby minimizing the impact on the human body and achieving micro-insertion, which is suitable for abdominal (or otolaryngology) surgery. For manual adjustment, the control slider 102 can be quickly pulled back and forth for quick adjustment according to actual conditions, and the control slider 102 can be pulled slightly for fine-tuning, which is very flexible and convenient.

[0051] After use, the control slide bar 102 can be pushed in the reverse direction, so that the end and the middle of the metal tube 201 are restored to a state that is more convenient for removing the blade, thereby greatly reducing the pain of the patient during the operation.

[0052] Adjustment of knife body rotation

[0053] See also Figure 6-10, by pressing the rotation key 13 downward, the driving motor 607 is turned on, so that the reversing wheel 603 rotates, and then drives the rotating drum 6 to rotate, and then drives the metal tube 201 inside the rotating drum 6 to rotate together, so that under the premise that the knife body can only bend left and right, the knife head can reach any position without rotating the handle 1, making up for the shortcomings in other directions, which is very beneficial to the stability of the handle 1 during the operation. When the knife head needs to rotate, the handle 1 does not have irregular front, back, left and right displacements (currently, the rotation of the knife body is generally to rub the handle with the thumb, so that the knife head cannot stay stably in the designated area when rotating), which greatly reduces the risk of touching other healthy tissues during the operation. At the same time, the rotation of the knife body can also reduce the interference of the conductor on the surgical field of view;

[0054] Specifically, when the rotation key 13 is pressed, the wedge-shaped push block 609 below is driven to move together to press down the extension piece 27, thereby driving the fixing ring 25 to move downward, so that the conical ring 29 moves downward to separate from the rotating drum 6, and the magnetic ring 28 moves downward to separate from the bottom of the rotating drum 6, thereby releasing the rotating drum 6 so that it can rotate. After the rotation key 13 is pressed to release the rotating drum 6, its end contacts the contact piece 608 so that the driving motor 607 is connected, and then the reversing wheel 603 can rotate to drive the rotating drum 6 to rotate, changing the direction of the blade head of the cutter body, so that the blade head can reach any position in the circumferential direction;

[0055] Keep the rotation key 13 pressed, then the drive motor 607 is always in the on state, and the rotating drum 6 keeps rotating. Release the rotation key 13, the drive motor 607 stops immediately, the fixing ring 25 pops up immediately, and the conical ring 29 enters the inner ring of the rotating drum 6. The contact between the outer side of the conical ring 29 and the stripes on the inner ring of the rotating drum 6 increases the friction or even interlacing, thereby fixing the position of the rotating drum 6. The rotation is fixed immediately after it stops, which is more timely and stable. At the same time, the magnetic ring 28 is also adsorbed and fixed to the bottom of the rotating drum 6. The double fixation is safer and can ensure the stability of the knife head during the operation.

[0056] The metal tube 201 of the blade body 2 can also be provided with a guide tube 204 and a suction tube 205. Physiological saline can be transported to the blade head through the guide tube 204, and tissue fluid from the affected area can be sucked out through the suction tube 205, so as to keep the surgical field clearer. At the same time, the guide sleeve 207 and the suction sleeve 208 maintain the connection and seal with the guide tube 204 and the suction tube 205, while allowing the guide tube 204 and the suction tube 205 to follow the rotation of the metal tube 201.

Claims

1. A plasma surgical knife, comprising a handle (1) and a blade body (2), wherein the blade body (2) is installed in the handle (1) and the end portion thereof extends outward, and an electrode is installed at the front end of the blade body (2) and is electrically connected to a wire in the handle (1), characterized in that: The blade body (2) comprises a metal tube (201), wherein the middle section and the front end of the metal tube (201) are both rotatably mounted with an adjustment paddle (203) via an adjustment shaft (202), and the rotation of the adjustment paddle (203) is used to change the curvature and bending direction of the metal tube (201); A rotating cylinder (6) is rotatably connected to the middle of the handle (1), the rotating cylinder (6) is located at the upper end of the metal tube (201) and the two are fixedly connected, a middle adjustment dial wheel (601) and an end adjustment dial wheel (602) are rotatably installed in the rotating cylinder (6) up and down, the middle adjustment dial wheel (601) and the end adjustment dial wheel (602) are used to respectively control the rotation of the adjustment shaft (202) at the middle section and the front end of the metal tube (201), thereby driving the adjustment paddle (203) to rotate; A reversing wheel (603) installed in the handle (1), the reversing wheel (603) is used to drive the rotating drum (6) to rotate and drive the blade body (2) to rotate; A stabilizing plate (10) is fixedly connected to the side wall of the handle (1), and the side of the stabilizing plate (10) is provided with an end control key (11) and a middle control key (12) for controlling the bending direction and bending degree of the blade body (2), and a rotation key (13) for controlling the rotation of the blade body (2).

2. A plasma surgical knife according to claim 1, characterized in that: The middle adjustment thumbwheel (601) and the adjustment shaft (202) at the middle section of the metal tube (201) are connected with the end adjustment thumbwheel (602) and the adjustment shaft (202) at the end of the metal tube (201) via a toothed belt (209) or a chain.

3. The plasma surgical knife according to claim 1, characterized in that: The outer rotating sleeve of the rotating drum (6) is provided with an upper ring sleeve (604) and a lower ring sleeve (605), and the adjacent ends of the upper ring sleeve (604) and the lower ring sleeve (605) are fixedly connected with a gear ring (606). The upper ring sleeve (604) and the lower ring sleeve (605) are respectively located at the upper and lower ends of the rotating drum (6), and the upper ring sleeve (604) is located above the middle adjustment dial wheel (601) and meshes with the middle adjustment dial wheel (601) through the gear ring (606), and the lower ring sleeve (605) is located below the end adjustment dial wheel (602) and meshes with the end adjustment dial wheel (602) through the gear ring (606).

4. A plasma surgical knife according to claim 3, characterized in that: The stabilizing plate (10) is hollow, and has two sets of sliding windows on the side for the end control keys (11) and the middle control keys (12) to pass through respectively; Two sets of intermediate gears (101) are rotatably connected to the stabilizing plate (10), wherein the intermediate gears (101) are arranged on the upper and lower sides and respectively mesh with the gear rings (606) of the upper ring sleeve (604) and the lower ring sleeve (605) to respectively drive the upper ring sleeve (604) and the lower ring sleeve (605) to rotate; A control slide bar (102) is slidably connected to the inner side of the stabilizing plate (10); the control slide bar (102) passes through a connecting plate (103) and passes through a sliding window to be fixedly connected to an end control key (11) and a middle control key (12) respectively for driving the intermediate gear (101) to rotate; and elastic members for disengaging the control slide bar (102) from the intermediate gear (101) are provided between the end control key (11) and the middle control key (12) and the stabilizing plate (10).

5. A plasma surgical knife according to claim 4, characterized in that: A support plate (104) is provided in the sliding window, an elastic member is fixedly connected between the support plate (104) and the bottom of the sliding window, and the support plate (104) and the connecting plate (103) are slidably matched to support and reset the control slide bar (102).

6. The plasma surgical knife according to claim 1, characterized in that: The rotating bottom is fixedly connected to a top ring, the top ring is meshed with the reversing wheel (603), a driving motor (607) is installed in the stabilizing sheet (10), and the driving motor (607) is used to drive the reversing wheel (603) to rotate; A contact piece (608) installed in the stabilizing piece (10) and a rotation key (13) slidably connected to the side of the stabilizing piece (10) of the handle (1), wherein the contact piece (608) is used to rotate the driving motor (607) when the rotation key (13) is pressed and contacts therewith.

7. A plasma surgical knife according to claim 6, characterized in that: The handle (1) is fixedly connected with a bottom washer (24) and slidably connected with a fixing ring (25), and a fixing spring (26) is installed between the bottom washer (24) and the fixing ring (25); An extension piece (27) fixed to the side of the fixing ring (25), wherein the extension piece (27) extends outwardly into the stabilizing piece (10); A wedge-shaped push block (609) fixedly connected to the side wall of the rotating key (13), the wedge-shaped push block (609) being located above the extension piece (27) and used for pressing down the fixing ring (25) when the rotating key (13) is pressed; A magnetic ring (28) and a conical ring (29) are fixedly connected to the top of the fixed ring (25); the conical ring (29) is used to be inserted into the bottom fixed rotating drum (6) in the rotating drum (6); the magnetic ring (28) is used to absorb and rotate the bottom fixed rotating drum (6); and the magnetic ring (28) and the conical ring (29) are used to limit the rotation of the rotating drum (6).

8. The plasma surgical knife according to claim 1, characterized in that: A guide tube (204) sleeved on the metal tube (201) and a suction tube (205) sleeved on the guide tube (204); An electric ring (206) is installed in the handle (1), the electric ring (206) is located outside the metal tube (201) and is electrically connected thereto so that the electrodes of the blade head are energized, and an insulating layer is provided inside and outside the metal tube (201); A guide sleeve (207) and a suction sleeve (208) are installed in the handle (1), wherein the guide sleeve (207) is located at the top of the guide tube (204) and the two are rotatably connected to the inner ring and the metal tube (201) for rotational sealing, and the suction sleeve (208) is located at the top of the suction sleeve (208) and the two are rotatably connected to the inner ring and the guide tube (204) for rotational sealing; A wire, an injection tube and a suction tube are respectively led out from the sides of the electric ring (206), the guide sleeve (207) and the suction sleeve (208). The wire, the injection tube and the suction tube are arranged through the stabilizing sheet (10) and then pass through the top of the handle (1).

9. The plasma surgical knife according to claim 8, characterized in that: The top of the handle (1) is provided with an installation cavity (105), and the installation cavity (105) is used for wiring and fixing of wires, injection tubes and suction tubes and installation and fixing of electronic components. The outside of the handle (1) is provided with a gripping surface, and a middle sealing shell (106) is installed outside the stabilizing plate (10), and the middle sealing shell (106) is used to protect the rotating drum (6) inside.

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