A multifunctional surgical instrument

Abstract

The present invention discloses a multifunctional surgical instrument, comprising: a suction tube, one end of the suction tube is connected with a suction head, and the other end of the suction tube is provided with a handle; a removal mechanism, the removal mechanism is installed in the suction head, and the removal mechanism removes bone debris blocking the suction head; a control mechanism, the control mechanism is installed between the handle and the suction tube, and by rotating the control mechanism, the bone debris is pushed away from the suction head after the suction head is blocked by bone debris. In the present invention, when the suction head is blocked, the rotating wheel can be directly rotated, and the bone debris or blockage is pushed away from the suction head through the rotating head, reducing the time for medical staff to replace or clean the suction tube, shortening the operation time, and ensuring the safety of the patient during the operation. Secondly, the suction head and the suction tube can rotate relative to each other, thereby reducing the use limitations of the instrument. The suction head can be bent for use, facilitating the use by medical staff. In addition, the protection mechanism can protect the nerves or brain tissue of the patient, reducing the damage to the nerves or brain tissue of the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a multifunctional surgical instrument. Background Art

[0002] Surgical instruments refer to medical devices used in clinical surgeries. In addition to conventional surgical instruments, there are also some specialized instruments: orthopedic, urological, gynecological, burn, plastic surgery, neurosurgery, cardiothoracic surgery, general surgery, and so on.

[0003] During neurosurgery, a suction device is required to suck the blood and water at the surgical site of the patient to clear the surgical field. The suction device consists of an external suction device and a suction tube held by the doctor. The suction device provides negative pressure. After the suction tube is held by the doctor, it is placed into the bleeding or fluid accumulation position of the patient to extract the blood or fluid. The suction tube is composed of a suction head with a blunt end and a curved connecting tube connected to the suction device. A plurality of side holes for adjusting the suction force inside the suction tube are opened at the end of the connecting tube. When the doctor performs the surgery, the doctor needs to place the suction head of the suction tube at the surgical bleeding or fluid accumulation position, and then control the suction force of the suction tube by pressing the side holes with fingers. However, in neurosurgery, when the doctor saws open the patient's skull, some bone chips will fall onto the patient's brain. The bone chips will accumulate on the surface of the patient's brain along with the fluid or blood accumulation. When the suction tube sucks, it may cause blockage of the suction tube, and then it is necessary to replace or clean the suction tube, which delays the surgery time and increases the surgical risk of the patient. Therefore, we propose a multifunctional surgical instrument. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional surgical instrument to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A multifunctional surgical instrument, comprising:

[0006] A suction tube, one end of the suction tube is connected with a suction head, and the other end of the suction tube is provided with a handle;

[0007] A removal mechanism, the removal mechanism is installed in the suction head, and the removal mechanism removes the bone chips blocking the suction head;

[0008] A control mechanism, the control mechanism is installed between the handle and the suction tube, and rotates the control mechanism to push the bone chips away from the suction head after the suction head is blocked by the bone chips.

[0009] Preferably, the removal mechanism includes a rotating head installed in the suction head. A spiral groove is opened on the surface of the rotating head. One end of the rotating head is rotatably connected to the suction head, and the other end of the rotating head is connected to the control mechanism through a steel wire rope.

[0010] Preferably, the control mechanism includes a sealing cover installed on the outer side of the suction tube. A runner is rotatably connected inside the sealing cover, and the runner is connected to the steel wire rope.

[0011] Preferably, a rotating mechanism for bending the suction head is provided between the control mechanism and the suction head. The suction head is rotatably connected to the suction tube, and the suction head and the inner wall of the suction tube are connected by an elastic tube. The rotating mechanism includes a rotating plate installed inside the suction tube. A through hole for the steel wire rope to penetrate is provided inside the rotating plate. A pushing ring for pushing the rotating plate to rotate after the steel wire rope is pulled is provided on the outer side of the steel wire rope. A sliding plate is provided on the outer side of the runner, and the sliding plate is slidably connected to the sealing cover.

[0012] Preferably, an adjusting mechanism for adjusting the internal suction force of the suction head is provided between the rotating head and the steel wire rope. The adjusting mechanism includes an adjusting cover connected to the steel wire rope. An adjusting plate is provided inside the adjusting cover. A sealing plate is provided on one side of the adjusting plate. A first spring is provided between the sealing plate and the adjusting plate. A connecting rod penetrates through the sealing plate, and the connecting rod is connected to the rotating head.

[0013] Preferably, a limiting groove for accommodating the rotating plate is provided inside the suction head, and the limiting groove is arc-shaped.

[0014] Preferably, both sides of the adjusting cover are frustum-shaped, both sides of the inside of the suction head located at the adjusting cover are concave frustum-shaped, and steel balls are provided between the adjusting cover and the suction head.

[0015] Preferably, a protection mechanism is provided on the outer side of the suction tube. The protection mechanism includes a sliding strip installed on the outer side of the suction tube. A sliding groove adapted to the sliding strip is provided inside the suction tube. A closed cover is provided inside the suction tube. The closed cover is connected to an external air pump through a hose. An air hole one is provided at the position of the sliding groove on the suction tube. An air hole two misaligned with the air hole one is provided on the surface of the sliding strip. The sliding strip is connected to the suction head.

[0016] Preferably, the runner is rotatably connected to the limiting post on the outer side of the sliding plate through a groove on the side surface. A rotating ring that rotates inside the handle is provided at the end of the steel wire rope.

[0017] Preferably, a top plate is provided on the outer side of the sliding plate. A switch is provided on the outer side of the sealing cover. One end of the switch is connected to a guide post. A guide sleeve is provided on the outer side of the guide post. A second spring is provided between the guide post and the guide sleeve.

[0018] The present invention has at least the following beneficial effects:

[0019] When the control mechanism and the removal mechanism are used to unclog the blockage in the suction head, the suction force of the suction head is adjusted by the adjustment mechanism, and the protection mechanism isolates and protects the patient's brain tissue or nerves when the suction head and the suction tube are bent. Compared with the prior art, in neurosurgery, when the doctor saws open the patient's skull, some bone chips will fall onto the patient's brain, and the bone chips will accumulate on the surface of the patient's brain along with the effusion or blood accumulation. When the suction tube sucks, it may cause blockage to the suction tube, and then it is necessary to replace or clean the suction tube, which delays the operation time and increases the surgical risk of the patient. In the present invention, when the suction head is blocked, the rotating wheel can be directly rotated, and the bone chips or blockages are pushed away from the suction head through the rotating head, reducing the time for medical staff to replace or clean the suction tube, shortening the operation time, and ensuring the safety of the patient's operation. Secondly, the suction head and the suction tube can be rotated relative to each other, thereby reducing the limitation of the use of the instrument. The suction head can be bent and used, which is convenient for medical staff to use. In addition, the protection mechanism can protect the patient's nerves or brain tissue and reduce the damage to the patient's nerves or brain tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a structural diagram of another perspective of the present invention;

[0022] Figure 3 is a partial cross-sectional view of the suction tube and the suction head of the present invention;

[0023] Figure 4 is a cross-sectional view of the elastic tube of the present invention;

[0024] Figure 5 is a cross-sectional view of the adjustment cover of the present invention;

[0025] Figure 6 is a partial cross-sectional view of the protection mechanism of the present invention;

[0026] Figure 7 is a structural diagram of the control mechanism of the present invention;

[0027] Figure 8 is a partial cross-sectional view of the handle of the present invention;

[0028] Figure 9 is a partial cross-sectional view of the sealing cover of the present invention.

[0029] In the figure: 1-suction tube; 2-suction head; 3-handle; 4-removal mechanism; 41-rotating head; 42-steel wire rope; 5-control mechanism; 51-sealing cover; 52-rotating wheel; 53-slide plate; 54-limiting column; 6-rotating mechanism; 61-elastic tube; 62-rotating plate; 63-pushing ring; 7-adjusting mechanism; 71-adjusting cover; 72-adjusting plate; 73-sealing plate; 74-spring 1; 75-connecting rod; 76-steel ball; 8-protection mechanism; 81-sliding bar; 82-sliding groove; 83-sealing cover; 84-hose; 85-air hole 1; 86-air hole 2; 9-rotating ring; 10-top plate; 11-switch; 12-guide column; 13-guide sleeve; 14-spring 2. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1-9 The present invention provides a technical solution: Embodiment 1, a multifunctional surgical instrument, comprising:

[0032] Suction tube 1, one end of the suction tube 1 is connected to a suction head 2, and the other end of the suction tube 1 is provided with a handle 3, the suction head 2 is blunt and round, and the suction head 2 is used to suck blood or fluid in the patient's tissue, and the handle 3 is used for medical staff to hold. The suction tube 1 is convenient for medical staff to hold the handle 3 and insert the suction head 2 into the patient's fluid or blood accumulation position, which is convenient for medical staff to suck fluid and blood accumulation in patients during surgery;

[0033] The removal mechanism 4 is installed in the suction head 2. The removal mechanism 4 removes the bone debris that blocks the suction head 2. When the removal mechanism 4 attracts the bone debris in the suction head 2, the negative pressure of the suction device can be obviously increased. At this time, the medical staff can push the bone debris away from the suction head 2 by rotating the removal mechanism 4.

[0034] The control mechanism 5 is installed between the handle 3 and the suction tube 1. The control mechanism 5 is rotated to push the bone debris away from the suction head 2 after the bone debris blocks the suction head 2. The control mechanism 5 is installed at the front end of the handle 3. When the suction tube 1 is blocked during the patient's operation, the control mechanism 5 on the side of the handle 3 can be directly rotated to directly remove the bone debris or blockage from the position of the suction head 2, thereby facilitating the use of medical staff. Medical staff do not need to replace the suction tube 1 again, saving operation time and reducing the patient's surgical risks.

[0035] The removal mechanism 4 includes a rotating head 41 installed inside the suction head 2. The outer side of the rotating head 41 is rotationally connected to the suction head 2 through a connection. The surface of the rotating head 41 is provided with a spiral groove. The spiral groove can facilitate the rotating head 41 to push the bone debris and separate it from the suction head 2 when rotating. Moreover, the spiral groove can chop up some bone debris when rotating in the reverse direction. The edge of the spiral groove is relatively sharp, which is more convenient for the operation of medical staff. One end of the rotating head 41 is rotationally connected to the suction head 2, and the other end of the rotating head 41 is connected to the control mechanism 5 through a steel wire rope 42.

[0036] The control mechanism 5 includes a sealing cover 51 installed outside the suction tube 1. Inside the sealing cover 51, there is a rotating wheel 52 rotationally connected. The rotating wheel 52 is connected to the steel wire rope 42 and fixedly connected to the steel wire rope 42. The sealing cover 51 is fixedly connected to the suction tube 1 and fixedly connected to the handle 3. The sealing cover 51 seals the suction tube 1 and the handle 3. Medical staff directly connect the negative pressure tube to the tail end of the handle 3, which is more convenient for the operation of medical staff.

[0037] There is a rotating mechanism 6 for bending the suction head 2 between the control mechanism 5 and the suction head 2. The rotating mechanism 6 can make the use of the suction head 2 more convenient and facilitate the use of medical staff in different environments. The suction head 2 is rotationally connected to the suction tube 1. The suction head 2 is rotationally connected to the suction tube 1 through a rotating shaft. The inner wall of the suction head 2 and the suction tube 1 are connected by an elastic tube 61. The elastic tube 61 has elasticity. Both ends of the elastic tube 61 are fixedly connected to the suction head 2 and the suction tube 1 respectively. When the suction head 2 rotates relative to the suction tube 1, the elastic tube 61 will elastically deform, so as to ensure that the suction head 2 and the suction tube 1 remain in a sealed state under the premise of rotation. The rotating mechanism 6 includes a rotating plate 62 installed inside the suction tube 1. The rotating plate 62 is rotationally connected to the inner wall of the suction tube 1. A through hole for the steel wire rope 42 to penetrate is provided inside the rotating plate 62. Outside the steel wire rope 42, there is a pushing ring 63 that pushes the rotating plate 62 to rotate after being pulled by the steel wire rope 42. The pushing ring 63 is fixedly connected to the steel wire rope 42. Outside the rotating wheel 52, there is a sliding plate 53. The sliding plate 53 is slidably connected to the sealing cover 51. The rotating wheel 52 is rotationally connected to the limiting column 54 outside the sliding plate 53 through a groove on the side. The limiting column 54 is fixedly connected to the sliding plate 53. The groove on the side of the rotating wheel 52 can rotate along the limiting column 54, which is more convenient for the rotating wheel 52 to rotate inside the sliding plate 53, so as to ensure that the rotating wheel 52 can rotate conveniently under the premise of the sealing cover 51 being sealed, and then drive the rotating head 41 to rotate, so as to facilitate the removal of bone debris or blockages. The end of the steel wire rope 42 is provided with a rotating ring 9 that rotates inside the handle 3. The rotating ring 9 is rotationally connected to the inner wall of the handle 3. The steel wire rope 42 is fixedly connected to the rotating ring 9. Inside the suction head 2, a limiting groove for accommodating the rotating plate 62 is provided. The limiting groove is arc-shaped.

[0038] After the medical staff holds the handle 3 and places the suction tube 1 and the suction head 2 at the position of the cerebral hemorrhage or hydrops of the patient, at this time, the external suction device sucks the hemorrhage or hydrops through the pipeline. During the suction process of the suction head 2, if the negative pressure of the suction device is too large, at this time, the suction head 2 is blocked. Then, rotate the rotating wheel 52, and the rotating wheel 52 drives the steel wire rope 42 to rotate. When the steel wire rope 42 rotates, it drives the suction head 2 to rotate. When the suction head 2 rotates, it will directly separate or crush the blockage, thus facilitating subsequent suction. When the medical staff needs to suck the hemorrhage or hydrops at the corner position, at this time, the medical staff directly pulls the rotating wheel 52, and the rotating wheel 52 and the sliding plate 53 move simultaneously and slide in the sealing cover 51. The rotating wheel 52 drives the steel wire rope 42 to move. The steel wire rope 42 pushes the rotating plate 62 to rotate through the pushing ring 63. When the rotating plate 62 rotates, it will push the suction head 2 to rotate relative to the suction tube 1, so that the elastic tube 61 bends simultaneously. After the rotating plate 62 rotates to the groove position, at this time, the rotating plate 62 is positioned, and the bending angle between the suction head 2 and the suction tube 1 is positioned, so that the medical staff can directly use it, and the operation is extremely convenient. When the steel wire rope 42 moves, the steel wire rope 42 is in a relative sliding state relative to the rotating head 41. The rotating head 41 is still at the end of the suction head 2, so that the blockage in the suction head 2 can continue to be removed by rotating the rotating wheel 52.

[0039] According to the above embodiment, Embodiment 2, an adjusting mechanism 7 for adjusting the internal suction force of the suction head 2 is provided between the rotating head 41 and the steel wire rope 42. The adjusting mechanism 7 includes an adjusting cover 71 connected to the steel wire rope 42. The adjusting cover 71 is fixedly connected to the steel wire rope 42. An adjusting plate 72 is provided inside the adjusting cover 71. The adjusting plate 72 is a square plate, and the groove inside the adjusting cover 71 is rectangular. A sealing plate 73 is provided on one side of the adjusting plate 72. The sealing plate 73 is a circular plate. The sealing plate 73 fits on the inner wall of the adjusting cover 71. A first spring 74 is provided between the sealing plate 73 and the adjusting plate 72. A connecting rod 75 penetrates through the sealing plate 73. One end of the connecting rod 75 is fixedly connected to the adjusting plate 72, and the other end of the connecting rod 75 is fixedly connected to the rotating head 41. The connecting rod 75 is connected to the rotating head 41 and is slidably connected to the sealing plate 73. The first spring 74 fits the sealing plate 73 on the inner wall of the adjusting cover 71, thereby ensuring that the adjusting cover 71 is in a sealed state, reducing the possibility of blood or hydrops entering the adjusting cover 71, and keeping the adjusting cover 71 clean.

[0040] Both sides of the adjusting cover 71 are in a frustum shape, and the inner part of the suction head 2 on both sides of the adjusting cover 71 is in an inward concave frustum shape. Steel balls 76 are provided between the adjusting cover 71 and the suction head 2, and the steel balls 76 can roll inside the suction head 2.

[0041] When medical staff hold the handle 3 and need to control the pressure on the surface of the suction head 2, when the suction head 2 and the suction tube 1 are in a straight line state, at this time, only need to pull the rotating wheel 52, the rotating wheel 52 will drive the steel wire rope 42 to move. At this time, the steel wire rope 42 drives the adjusting cover 71 to disengage from the concave round table shape on one side of the suction head 2, the air flow area inside the suction head 2 increases, and thus the negative pressure decreases. When pulling the steel wire rope 42, at this time, the connecting rod 75 drives the adjusting plate 72 to move relative to the adjusting cover 71, and the first spring 74 is compressed. At this time, the sealing plate 73 remains in a sealed state continuously. When medical staff hold and operate, the steel ball 76 is located between the adjusting cover 71 and the inner wall of the suction head 2. When medical staff use the suction head 2 to suck blood clots or effusions, at this time, the steel ball 76 will abut against the bottom of the adjusting cover 71, and thus the adjusting cover 71 is extruded upward, and the blood clots or effusions will enter the suction tube 1 from the bottom of the suction head 2, so as to keep the bottom of the suction head 2 continuously sucking blood clots or effusions. When the top liquid level of the sucked blood clots or effusions is lower than the top of the suction head 2, at this time, the bottom of the suction head 2 can continue to suck blood clots or effusions, so as to more conveniently suck out the blood clots or effusions completely, thus facilitating the use of medical staff;

[0042] In addition, when the suction tube 1 and the suction head 2 are in a bent state, the round table surface on the other side of the adjusting cover 71 corresponds to the round table-shaped recess on the other side of the suction head 2, and the steel ball 76 is pushed to the outside of the round table surface. At this time, pull the rotating wheel 52 again, the rotating wheel 52 drives the steel wire rope 42 to move, and the steel wire rope 42 drives the two round table surfaces to approach, so as to reduce the area through which the wind passes, increase the negative pressure at the end of the suction head 2, and thus can continue to adjust the negative pressure of the suction head 2 after bending,

[0043] During the adjustment process, the rotating plate 62 rotates in the groove and does not generate a force on the suction head 2, facilitating the adjustment of the adjustment mechanism 7.

[0044] According to the above embodiment, Embodiment Three, a protection mechanism 8 is provided on the outer side of the suction tube 1. The protection mechanism 8 includes a sliding strip 81 installed on the outer side of the suction tube 1, a sliding groove 82 adapted to the sliding strip 81 is opened in the suction tube 1, a closed cover 83 is arranged inside the suction tube 1, the closed cover 83 is fixedly connected with the suction tube 1, the closed cover 83 is connected with an external air pump through a hose 84, the hose 84 is communicated with the sealing cover 51, the hose 84 is fixed on the outer side of the suction tube 1, an air hole one 85 is opened at the position of the suction tube 1 where the sliding groove 82 is located, an air hole two 86 misaligned with the air hole one 85 is opened on the surface of the sliding strip 81, and the sliding strip 81 is fixedly connected with the suction head 2.

[0045] On the outer side of the skateboard 53, there is a top plate 10 which is fixedly connected to the skateboard 53. On the outer side of the sealing cover 51, there is a switch 11. One end of the switch 11 is connected with a guide post 12 which is fixedly connected to the switch 11. On the outer side of the guide post 12, there is a guide sleeve 13. The guide post 12 is slidably connected with the guide sleeve 13. Between the guide post 12 and the guide sleeve 13, there is a second spring 14. The two ends of the second spring 14 are respectively fixedly connected to the guide post 12 and the guide sleeve 13.

[0046] When the suction head 2 and the suction tube 1 are in a bent state, at this time, the sliding bar 81 at the top is pulled by the suction head 2, resulting in the alignment of the first air hole 85 and the second air hole 86. The sliding bar 81 at the bottom is squeezed by the suction head 2, resulting in the alignment of the first air hole 85 and the second air hole 86. At the same time, the skateboard 53 pushes the top plate 10 to squeeze the switch 11, and the switch 11 is turned on. The external air pump ventilates, and the channel formed between the first air hole 85 and the second air hole 86 discharges air outwards. Thus, an air film is formed on the outer side of the suction tube 1, thereby reducing the possibility of the suction tube 1 contacting the patient's other tissues, reducing the adhesion of blood accumulation or fluid accumulation on the outer side of the suction tube 1 to the brain tissue or nerve when it is about to dry, and thus causing nerve or brain tissue damage. After the suction tube 1 and the suction head 2 are bent, it indicates that the blood accumulation or fluid accumulation in the relatively narrow or tissue-bent part of the patient needs to be aspirated. At this time, there is a visual blind area for medical staff. Inadvertently, the suction tube 1 can adhere to the brain tissue or nerve. When moving the suction tube 1, it may pull the brain tissue or nerve, causing secondary injury to the patient. Therefore, the protection mechanism 8 is needed to protect it, and the protection mechanism 8 will not interfere with the use of other mechanisms, which is more convenient for medical staff to use during the operation.

[0047] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional surgical instrument comprising: A suction tube (1), one end of the suction tube (1) is connected to a suction head (2), and the other end of the suction tube (1) is provided with a handle (3); Features: A removal mechanism (4), the removal mechanism (4) being installed in the suction head (2), and the removal mechanism (4) removing bone residues that clog the suction head (2); A control mechanism (5), the control mechanism (5) being installed between the handle (3) and the suction tube (1), and rotating the control mechanism (5) to push the bone residue away from the suction head (2) after the bone residue blocks the suction head (2); The removal mechanism (4) comprises a rotating head (41) installed in the suction head (2), a spiral groove is provided on the surface of the rotating head (41), one end of the rotating head (41) is rotatably connected to the suction head (2), and the other end of the rotating head (41) is connected to the control mechanism (5) via a steel wire rope (42); The control mechanism (5) comprises a sealing cover (51) mounted on the outside of the suction tube (1), wherein a rotating wheel (52) is rotatably connected to the inside of the sealing cover (51), and the rotating wheel (52) is connected to the steel wire rope (42); A rotating mechanism (6) for bending the suction head (2) is provided between the control mechanism (5) and the suction head (2), the suction head (2) is rotatably connected to the suction tube (1), the suction head (2) is connected to the inner wall of the suction tube (1) through an elastic tube (61), the rotating mechanism (6) includes a rotating plate (62) installed in the suction tube (1), a through hole for the steel wire rope (42) to pass through is provided inside the rotating plate (62), a pushing ring (63) is provided on the outside of the steel wire rope (42) for pushing the rotating plate (62) to rotate after the steel wire rope (42) is pulled, and a slide plate (53) is provided on the outside of the rotating wheel (52), and the slide plate (53) is slidably connected to the sealing cover (51); An adjusting mechanism (7) for adjusting the internal attraction force of the suction head (2) is provided between the rotating head (41) and the steel wire rope (42), the adjusting mechanism (7) comprising an adjusting cover (71) connected to the steel wire rope (42), an adjusting plate (72) provided inside the adjusting cover (71), a sealing plate (73) provided on one side of the adjusting plate (72), a spring (74) provided between the sealing plate (73) and the adjusting plate (72), a connecting rod (75) passing through the interior of the sealing plate (73), and the connecting rod (75) connected to the rotating head (41); The two sides of the adjustment cover (71) are in the shape of a truncated cone, and the interior of the suction head (2) is located on both sides of the adjustment cover (71) and is in the shape of a concave truncated cone. A steel ball (76) is provided between the adjustment cover (71) and the suction head (2), and the steel ball (76) can roll inside the suction head (2); At this time, it is only necessary to pull the rotating wheel (52), and the rotating wheel (52) will drive the steel wire rope (42) to move. At this time, the steel wire rope (42) drives the adjustment cover (71) to separate from the concave cone shape on one side of the suction head (2), and the air flow area in the suction head (2) increases, thereby reducing the negative pressure. A limiting groove for accommodating the rotating plate (62) is formed in the suction head (2), and the limiting groove is arc-shaped.

2. The multifunctional surgical instrument according to claim 1, wherein: A protection mechanism (8) is provided on the outer side of the suction tube (1). The protection mechanism (8) includes a sliding strip (81) installed on the outer side of the suction tube (1). A sliding groove (82) adapted to the sliding strip (81) is formed in the suction tube (1). A closed cover (83) is provided inside the suction tube (1). The closed cover (83) is connected to an external air pump through a hose (84). An air hole one (85) is formed in the suction tube (1) at the position of the sliding groove (82). An air hole two (86) which is misaligned with the air hole one (85) is formed on the surface of the sliding strip (81). The sliding strip (81) is connected to the suction head (2).

3. The multifunctional surgical instrument according to claim 1, characterized in that: The rotating wheel (52) is rotatably connected to the limiting column (54) on the outer side of the sliding plate (53) through a groove on the side. A rotating ring (9) that rotates inside the handle (3) is provided at the end of the steel wire rope (42).

4. A multifunctional surgical instrument according to claim 3, characterized in that: A top plate (10) is provided on the outer side of the sliding plate (53). A switch (11) is provided on the outer side of the sealing cover (51). One end of the switch (11) is connected to a guide post (12). A guide sleeve (13) is provided on the outer side of the guide post (12). A second spring (14) is provided between the guide post (12) and the guide sleeve (13).

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