Adjustable surgical knife handle structure

Abstract

The present invention discloses an adjustable surgical knife handle structure, which is applied to heart valve shaping surgery, and comprises a knife handle arranged along the axial direction, a rotating shaft is rotatably connected in the knife handle, one end of the rotating shaft extends outside the knife handle, and a knife head is arranged; a first through groove is formed through the side wall of the knife handle along the thickness direction of the knife handle, and a rotating wheel is arranged on the part of the rotating shaft located in the first through groove; a locking assembly is arranged on the rotating shaft, and the locking assembly has a locking state and an unlocking state. When the locking assembly is in the locking state, the rotating shaft and the knife handle are connected into one body; when the locking assembly is in the unlocking state, the rotating shaft can rotate relative to the knife handle. The present invention can reduce the risk of repair failure caused by the extremely limited adjustment of the knife head angle due to the limited operating space left for the operator due to the small incision, reduce the difficulty of minimally invasive surgery, and improve the success rate of heart valve repair.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to an adjustable surgical knife handle structure. Background Art

[0002] Rheumatic valvular heart disease is currently the most common cause of valvular heart disease in my country. The valve most commonly affected by rheumatic valvular heart disease is the mitral valve, causing mitral stenosis. Rheumatic mitral valvuloplasty is the latest development in the surgical treatment of rheumatic mitral valve disease in recent years. Studies have shown that the postoperative prognosis of rheumatic mitral valvuloplasty is better than that of traditional valve replacement surgery.

[0003] During rheumatic mitral valvuloplasty, the surgeon often needs to carefully remove the lesions on the valve leaflets. However, the angle adjustment of the blade on the traditional knife handle is extremely limited, which greatly tests the surgeon's surgical skills and can easily cut the mitral valve leaflets, causing repair failure. Especially in minimally invasive surgery, due to the small incision, the space left for the surgeon to operate is limited, making it inconvenient to perform heart valvuloplasty. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the handle structure used in the prior art for heart valve repair surgery is not convenient for adjusting the angle of the blade, which easily causes repair failure, thereby providing an adjustable surgical handle structure.

[0005] An adjustable surgical knife handle structure provided by the present invention is applied to heart valvuloplasty surgery, and the knife handle structure comprises:

[0006] The tool handle is arranged along the axial direction;

[0007] A rotating shaft, rotatably connected in the knife handle, with one end extending outside the knife handle;

[0008] A cutter head, arranged at one end of the rotating shaft extending outside the cutter handle;

[0009] A first through slot is formed on the side wall of the knife handle along the thickness direction of the knife handle, and a rotating wheel is arranged on the portion of the rotating shaft located in the first through slot;

[0010] The locking assembly is arranged on the rotating shaft, and the locking assembly has a locking state and an unlocking state. When the locking assembly is in the locking state, the rotating shaft and the knife handle are connected as a whole; when the locking assembly is in the unlocking state, the rotating shaft can rotate relative to the knife handle.

[0011] An adjustable surgical knife handle structure according to the present invention has at least the following technical effects:

[0012] By rotatably connecting a rotating shaft with a cutting head in a knife handle, a portion of the rotating shaft located in the first through groove is provided with a rotating wheel that drives the rotating shaft to rotate together, and a locking assembly is provided on the rotating shaft. When the portion of the rotating shaft with the cutting head is passed through a smaller incision to remove lesions on the valve leaflets for heart valvuloplasty surgery, if it is necessary to adjust the angle of the cutting head, it is only necessary to first switch the locking assembly from a locked state to an unlocked state. At this time, the restriction on the axial rotation of the rotating shaft is removed, and then the rotating shaft is driven to rotate axially by the rotating wheel, so that the cutting head can be quickly and accurately adjusted to the desired angle, thereby improving the success rate of repair. The entire adjustment process does not require the entire knife handle to be rotated in a smaller incision to adjust the angle of the cutting head, which can reduce the risk of repair failure caused by extremely limited adjustment of the cutting head angle due to limited operating space for the operator due to the small incision, reduce the difficulty of minimally invasive surgery, and improve the success rate of heart valve repair. At the same time, after the cutter head is adjusted to the desired angle position, the locking assembly is switched from the unlocked state to the locked state, imposing a restriction on the axial rotation of the shaft, thereby avoiding the risk of repair failure caused by accidentally hitting the rotating wheel to drive the shaft to rotate during the operation, and further improving the success rate of heart valve repair.

[0013] Preferably, a second through groove is formed on the side wall of the knife handle along the thickness direction of the knife handle, and the locking assembly includes a locking wheel, which is axially slidably connected to the part of the knife handle located in the second through groove, and an elastic member is provided between an end surface of the locking wheel axially away from the cutter head and an inner wall of the second through groove; when the locking assembly is in the locking state, the elastic member applies a pressing force to the locking wheel axially toward the cutter head, and an end surface of the locking wheel away from the elastic member abuts against the inner wall of the second through groove, and is locked by friction.

[0014] Preferably, the locking wheel has a plurality of clamping grooves arranged circumferentially at intervals on the end surface axially away from the elastic member; at least one clamping block is provided on the inner wall of the second through groove facing the end of the locking wheel with the clamping groove, and the clamping block matches the clamping groove; when the locking assembly is in the locking state, the clamping block is inserted into one of the clamping grooves.

[0015] Preferably, the elastic member is configured as a coil spring, and the coil spring is sleeved outside the outer circumference of the rotating shaft.

[0016] Preferably, the first through slot is located at an end of the knife handle facing the knife head, and the second through slot is located at an end of the knife handle facing away from the knife head.

[0017] Preferably, the portion of the knife handle located at the first through slot and the second through slot is configured as a gripping portion, and the gripping portion is provided with anti-slip grooves.

[0018] Preferably, the cutter head is detachably connected to the rotating shaft.

[0019] Preferably, a connecting portion is protruded from one end of the rotating shaft facing the cutter head, and a U-shaped groove is provided on the end surface of the cutter head facing the rotating shaft, the U-shaped groove is used for the connecting portion to be embedded, a through hole is formed on the surrounding wall of the U-shaped groove along its thickness direction, and a first threaded hole is provided on the side wall of the connecting portion at a position corresponding to the through hole; during assembly, the fastening screw passes through the through hole and is tightened in the first threaded hole.

[0020] Preferably, the through hole is arranged on one surrounding wall of the U-shaped groove, and the first threaded hole is arranged on the other surrounding wall.

[0021] Preferably, a plurality of first anti-slip ridges are arranged at intervals along the circumferential direction on the outer circumferential surface of the rotating wheel;

[0022] And / or, a plurality of second anti-skid ridges are arranged at intervals along the circumferential direction on the outer circumferential surface of the locking wheel.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an adjustable surgical knife handle structure of this embodiment;

[0026] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0027] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 4 It is a partial structural schematic diagram of an adjustable surgical knife handle structure of this embodiment.

[0029] Description of reference numerals:

[0030] 1-handle, 11-first through slot, 12-second through slot, 121-block, 13-anti-slip pattern;

[0031] 2-rotating shaft, 21-rotating wheel, 22-connecting portion, 221-first threaded hole, 23-sliding groove;

[0032] 3-cutter head, 31-U-shaped groove, 311-through hole;

[0033] 4-locking assembly, 41-locking wheel, 411-clamping groove, 412-second anti-slip edge, 42-elastic member. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] like Figures 1 to 4The figure shows an adjustable surgical handle structure provided by the present embodiment, which is applied to heart valvuloplasty surgery, wherein the handle structure comprises a handle 1 arranged along the axial direction, wherein a rotating shaft 2 is rotatably connected inside the handle 1, wherein one end of the rotating shaft 2 extends to the outside of the handle 1 and is provided with a cutting head 3; a first through groove 11 is formed through the side wall of the handle 1 along the thickness direction of the handle 1, and a rotating wheel 21 is provided on the portion of the rotating shaft 2 located in the first through groove 11; a locking assembly 4 is provided on the rotating shaft 2, and the locking assembly 4 has a locking state and an unlocking state, and when the locking assembly 4 is in the locking state, the rotating shaft 2 and the handle 1 are connected as a whole; when the locking assembly 4 is in the unlocking state, the rotating shaft 2 can rotate relative to the handle 1. It can be understood that the axial direction mentioned in the present embodiment refers to Figure 1 The axial direction in this embodiment refers to the thickness direction of the handle 1. Figure 1 The first direction is perpendicular to the axial direction.

[0039] The adjustable surgical knife handle structure of this embodiment is connected to the knife handle 1 by rotation of the rotating shaft 2 with the knife head 3, and the part of the rotating shaft 2 located in the first through groove 11 is provided with a rotating wheel 21 that drives the rotating shaft 2 to rotate together, and a locking component 4 is provided on the rotating shaft 2. In the process of passing the part of the rotating shaft 2 with the knife head 3 through a smaller incision to remove the lesions on the valve leaflet for heart valve repair surgery, if it is necessary to adjust the angle of the knife head 3, it is only necessary to first switch the locking component 4 from the locked state to the unlocked state. At this time, the restriction on the axial rotation of the rotating shaft 2 is removed, and then the rotating shaft 2 is driven to rotate axially by the rotating wheel 21, so that the knife head 3 can be quickly and accurately adjusted to the required angle, thereby improving the success rate of repair; the entire adjustment process does not require the entire larger-sized knife handle 1 to be rotated in a smaller incision to adjust the angle of the knife head 3, which can reduce the risk of repair failure caused by extremely limited adjustment of the angle of the knife head 3 due to the limited operating space left for the operator due to the small incision, reduce the difficulty of minimally invasive surgery, and improve the success rate of heart valve repair. At the same time, after the blade head 3 is adjusted to the desired angular position, the locking assembly 4 is switched from the unlocked state to the locked state, imposing a restriction on the axial rotation of the shaft 2, thereby avoiding the risk of repair failure caused by the rotating wheel 21 driving the rotating shaft 2 to rotate during the operation, and further improving the success rate of heart valve repair.

[0040] like Figure 2 and Figure 4As shown, optionally, a second through groove 12 is formed on the side wall of the knife handle 1 along the thickness direction of the knife handle 1, and the locking assembly 4 includes a locking wheel 41, which is axially slidably connected to the portion of the knife handle 1 located in the second through groove 12, and an elastic member 42 is arranged between an end surface of the locking wheel 41 axially away from the cutter head 3 and the inner wall of the second through groove 12. When the angle of the cutter head 3 needs to be adjusted, it is only necessary to apply a pushing force axially away from the cutter head 3 to the locking wheel 41, so that the locking wheel 41 pushes the elastic member 42 to deform until the locking wheel 41 is disengaged from the inner wall of the second through groove 12, and the restriction on the axial rotation of the rotating shaft 2 can be removed, so as to drive the rotating shaft 2 to rotate axially; when the cutter head 3 is adjusted to the required angular position, after the pressing force applied to the locking wheel 41 is removed, the elastic member 42 automatically applies an axial pressing force to the locking wheel 41 toward the cutter head 3 during the elastic recovery process, so that the end face of the locking wheel 41 away from the elastic member 42 abuts against the inner wall of the second through groove 12, and uses friction force to lock and apply the restriction on the axial rotation of the rotating shaft 2, thereby avoiding the risk of repair failure caused by accidentally touching the rotating wheel 21 to drive the rotating shaft 2 to rotate during the operation, thereby improving the success rate of heart valve repair; the locking assembly 4 is easy and labor-saving to switch between the locked state and the unlocked state. At the same time, in the process of driving the rotating shaft 2 to rotate axially, the locking wheel 41 and the rotating wheel 21 can provide the operator with space to apply force, so as to more accurately control the rotation speed of the rotating shaft 2, thereby more accurately controlling the angular position of the cutting head 3, and further improving the success rate of repair.

[0041] The structure of the locking component 4 is not limited to the above structure. In another replaceable embodiment, a second threaded hole is provided on the shank 1 along its thickness direction, and the locking component 4 includes a locking screw matching the second threaded hole. When the locking component 4 is in the locking state, the locking screw is threadedly connected in the second threaded hole, and the tip of the locking screw facing away from the nut is pressed against the outer peripheral surface of the rotating shaft 2 and locked by friction.

[0042] In order to facilitate the locking wheel 41 to be slidably connected to the rotating shaft 2 along the axial direction, and the locking wheel 41 does not rotate around the axial direction relative to the rotating shaft 2, as shown in FIG. Figure 4 As shown, specifically, a slide groove 23 is axially arranged on the outer circumferential surface of the rotating shaft 2 , and a sliding shaft is arranged at a position corresponding to the slide groove 23 on the locking wheel 41 , and the sliding shaft is slidably connected in the slide groove 23 .

[0043] Considering that if the tendency of the rotating shaft 2 to rotate around the axial direction is limited by the friction force generated by the end surface of the locking wheel 41 that is away from the elastic member 42 and abuts against the inner wall of the second through groove 12, the elastic member 42 needs to be pre-compressed in the initial state with a large amount, that is, the pre-compression force is large. The operator needs to apply a large force on the locking wheel 41 to push the elastic member 42 to deform until the locking wheel 41 is separated from the inner wall of the second through groove 12, which is inconvenient to operate and the locking effect is not good. In order to solve the above technical problems, Figure 2 and Figure 4 As shown, optionally, the end surface of the locking wheel 41 axially away from the elastic member 42 is evenly spaced along the circumferential direction with a plurality of snap-in grooves 411, preferably thirteen snap-in grooves 411 are provided here; a snap-in block 121 is provided on the inner wall of the end of the second through groove 12 facing the locking wheel 41 with the snap-in groove 411, and the snap-in block 121 matches the snap-in groove 411; when the locking assembly 4 is in the locking state, the snap-in block 121 is inserted into one of the snap-in grooves 411. When the angle of the cutter head 3 needs to be adjusted, it is only necessary to apply a pushing force axially away from the cutter head 3 to the locking wheel 41, so that the locking wheel 41 pushes the elastic member 42 to deform until the clamping block 121 is disengaged from the corresponding clamping groove 411, thereby removing the restriction on the axial rotation of the rotating shaft 2, so as to drive the rotating shaft 2 and the cutter head 3 to rotate axially; when the cutter head 3 is adjusted to the desired angular position around the axial direction, after the pressing force applied to the locking wheel 41 is removed, the elastic member 42 automatically applies a pushing force axially towards the locking wheel 41 during the elastic recovery process. The pressing force of the cutter head 3 causes the corresponding clamping groove 411 to clamp on the clamping block 121, and the abutment relationship between the clamping block 121 and the surrounding wall of the clamping groove 411 is used to replace the friction between the locking wheel 41 and the inner wall of the second through groove 12 to limit the freedom of the locking wheel 41 to rotate around the axial direction, so that the pre-compression amount of the elastic member 42 in the initial state can be reduced on the basis of ensuring that the locking wheel 41 is driven to move axially toward the clamping block 121 to reset, thereby facilitating the operator to switch the locking assembly 4 from the locked state to the unlocked state with less force. At the same time, the clamping block 121 can also play a positioning role. Only after the cutter head 3 is adjusted to the required angle position, one of the clamping grooves 411 is aligned with the clamping block 121 along the axial direction, further improving the accuracy of the angle adjustment of the cutter head 3, thereby further improving the success rate of repair.

[0044] In specific applications, the number of the snap-in slots 411 is reasonably increased or decreased according to the actual angle value that needs to be adjusted for the cutter head 3. For example, in other embodiments, the snap-in slots 411 are provided with ten, eleven, twelve, fourteen or other numbers.

[0045] Optionally, the elastic member 42 is configured as a coil spring, which is sleeved outside the outer periphery of the rotating shaft 2. The coil spring is a common standard part, which is easy to select and convenient to be sleeved and assembled outside the outer periphery of the rotating shaft 2. In addition, during the elastic recovery process, it can stably apply a pressing force along the axial direction toward the cutter head 3 to the locking wheel 41, ensuring that the clamping block 121 is clamped in the corresponding clamping groove 411 to achieve locking. As an alternative to the above technical solution, the elastic member 42 can also be configured as a straight cylindrical structure supported by an elastic material (such as rubber).

[0046] like Figure 1 and Figure 2 As shown, optionally, the first through slot 11 is located at one end of the knife handle 1 facing the knife head 3, and the second through slot 12 is located at one end of the knife handle 1 away from the knife head 3. This arrangement allows the rotating wheel 21 and the locking wheel 41 to be spaced apart by a set distance in the axial direction to provide enough space for the operator, so as to drive the knife head 3 to rotate and adjust along the axial direction with the rotating shaft 2 while keeping the locking assembly 4 in the unlocked state.

[0047] like Figure 2 and Figure 4 As shown, optionally, the portion of the knife handle 1 located at the first through slot 11 and the second through slot 12 is set as a gripping portion, and the gripping portion is provided with anti-slip patterns 13. The anti-slip patterns 13 increase the friction between the operator's palm and the knife handle 1, play an anti-slip role, and improve the convenience of use.

[0048] Optionally, the cutter head 3 is detachably connected to the rotating shaft 2 so as to replace the cutter head 3 with different blades to meet different repair needs.

[0049] like Figure 2 and Figure 3 As shown, optionally, a connecting portion 22 is protruded from one end of the rotating shaft 2 facing the cutter head 3, and a U-shaped groove 31 is provided on the end surface of the cutter head 3 facing the rotating shaft 2, and the U-shaped groove 31 is used for the connecting portion 22 to be embedded, and a through hole 311 is formed on the surrounding wall of the U-shaped groove 31 along its thickness direction, and a first threaded hole 221 is provided on the side wall of the connecting portion 22 at a position corresponding to the through hole 311; in the process of assembling and connecting the cutter head 3 to the rotating shaft 2, the connecting portion 22 is first embedded in the U-shaped groove 31, and the through hole 311 is aligned with the first threaded hole 221. At this time, the U-shaped groove 31 is used to limit the freedom of the connecting portion 22 to rotate axially relative to the cutter head 3, so as to facilitate the fastening screw to pass through the through hole 311 and be screwed into the first threaded hole 221, thereby realizing the accurate and tight installation of the cutter head 3 on the rotating shaft 2.

[0050] Of course, here is only a preference for the detachable connection structure between the cutter head 3 and the rotating shaft 2. In other embodiments, a U-shaped groove 31 can be recessed on the end of the rotating shaft 2 facing the cutter head 3, and a connecting portion 22 can be convexly provided on the end surface of the cutter head 3 facing the rotating shaft 2. The connecting portion 22 is used to be embedded in the U-shaped groove 31, and a through hole 311 is formed on the surrounding wall of the U-shaped groove 31 along its thickness direction, and a first threaded hole 221 is provided on the side wall of the connecting portion 22 at a position corresponding to the through hole 311; during assembly, the fastening screw passes through the through hole 311 and is tightened in the first threaded hole 221.

[0051] Optionally, the first threaded hole 221 passes through the connecting portion 22; the through hole 311 is provided on one surrounding wall of the U-shaped groove 31, and the first threaded hole 221 is also provided on the other surrounding wall. By also providing the first threaded hole 221 on the other surrounding wall of the U-shaped groove 31, the threaded connection area with the fastening screw is increased, and the stability of the cutter head 3 installed on the rotating shaft 2 is further improved.

[0052] Optionally, a plurality of first anti-skid edges are arranged at intervals along the circumferential direction on the outer circumference of the rotating wheel 21. The first anti-skid edges increase the friction between the operator's palm and the rotating wheel 21, playing an anti-skid role, so that the operator can drive the rotating shaft 2 to rotate axially to adjust the angle position of the cutter head 3.

[0053] like Figure 4 As shown, optionally, a plurality of second anti-skid ridges 412 are arranged at intervals along the circumferential direction on the outer peripheral surface of the locking wheel 41; the second anti-skid ridges 412 increase the friction between the operator's palm and the locking wheel 41, and play an anti-skid role, so that the operator can drive the rotating shaft 2 to rotate axially and adjust the angular position of the cutting head 3 through the locking wheel 41 in the unlocked state.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An adjustable surgical knife handle structure, used in heart valvuloplasty surgery, characterized in that: The handle structure comprises: A tool handle (1) is arranged along the axial direction; A rotating shaft (2) is rotatably connected inside the knife handle (1), with one end extending outside the knife handle (1); A cutter head (3) is arranged at one end of the rotating shaft (2) extending outside the cutter handle (1); A first through slot (11) is formed on the side wall of the knife handle (1) along the thickness direction of the knife handle (1), and a rotating wheel (21) is provided on the portion of the rotating shaft (2) located in the first through slot (11); A locking assembly (4) is arranged on the rotating shaft (2), and the locking assembly (4) has a locking state and an unlocking state. When the locking assembly (4) is in the locking state, the rotating shaft (2) and the knife handle (1) are connected as one body; when the locking assembly (4) is in the unlocking state, the rotating shaft (2) can rotate relative to the knife handle (1); A second through groove (12) is formed on the side wall of the knife handle (1) along the thickness direction of the knife handle (1); the locking assembly (4) comprises a locking wheel (41); the locking wheel (41) is axially slidably connected to the portion of the rotating shaft (2) located in the second through groove (12); the locking wheel (41), the rotating shaft (2) and the rotating wheel (21) are coaxially arranged; an elastic member (42) is arranged between an end face of the locking wheel (41) axially away from the cutter head (3) and an inner wall of the second through groove (12); when the locking assembly (4) is in the locking state, the elastic member (42) applies a pressing force to the locking wheel (41) axially toward the cutter head (3), and an end face of the locking wheel (41) away from the elastic member (42) abuts against the inner wall of the second through groove (12) and is locked by friction; The locking wheel (41) has a plurality of engaging grooves (411) arranged at intervals in the circumferential direction on the end surface thereof axially away from the elastic member (42); at least one engaging block (121) is arranged on the inner wall of the second through groove (12) facing the end of the locking wheel (41) with the engaging groove (411), and the engaging block (121) matches the engaging groove (411); when the locking assembly (4) is in the locking state, the engaging block (121) is inserted into one of the engaging grooves (411).

2. The adjustable surgical knife handle structure according to claim 1, characterized in that: The elastic member (42) is configured as a coil spring, and the coil spring is sleeved outside the outer periphery of the rotating shaft (2).

3. The adjustable surgical knife handle structure according to claim 1, characterized in that: The first through slot (11) is located at an end of the knife handle (1) facing the knife head (3), and the second through slot (12) is located at an end of the knife handle (1) facing away from the knife head (3).

4. The adjustable surgical knife handle structure according to claim 3, characterized in that: The portion of the knife handle (1) located at the first through groove (11) and the second through groove (12) is configured as a gripping portion, and the gripping portion is provided with anti-slip grooves (13).

5. The adjustable surgical knife handle structure according to claim 1, characterized in that: The cutter head (3) is detachably connected to the rotating shaft (2).

6. The adjustable surgical knife handle structure according to claim 5, characterized in that: A connecting portion (22) is protrudingly provided on one end of the rotating shaft (2) facing the cutter head (3); a U-shaped groove (31) is provided on the end surface of one end of the cutter head (3) facing the rotating shaft (2); the U-shaped groove (31) is used for embedding the connecting portion (22); a through hole (311) is formed on the surrounding wall of the U-shaped groove (31) along the thickness direction thereof; a first threaded hole (221) is provided on the side wall of the connecting portion (22) at a position corresponding to the through hole (311); during assembly, a fastening screw passes through the through hole (311) and is screwed into the first threaded hole (221).

7. The adjustable surgical knife handle structure according to claim 6, characterized in that: The through hole (311) is provided on one surrounding wall of the U-shaped groove (31), and the first threaded hole (221) is provided on the other surrounding wall.

8. The adjustable surgical knife handle structure according to claim 1, characterized in that: A plurality of first anti-slip ridges are arranged at intervals along the circumferential direction on the outer circumferential surface of the rotating wheel (21); And / or, a plurality of second anti-slip ridges (412) are arranged at intervals along the circumferential direction on the outer circumferential surface of the locking wheel (41).

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