Cutting device for butt joint hand bone surgery

Abstract

The invention discloses a cutting device for butt joint hand bone surgery, and relates to the technical field of medical equipment, the cutting device comprises a bottom plate, a front end module fixed on the bottom plate, a rear end module and a cutting knife; the rear end module comprises a fixed plate and a sliding plate, the sliding plate is slidably connected to the right end of the fixed plate, a locking ring is slidably connected to the interior of the fixed plate, the locking ring is connected with the sliding plate through a pull rope, and the locking ring is driven by movement of the sliding plate to conduct traction type fixation on the phalanx; an adjusting unit is arranged between the fixing plate and the sliding plate and used for being matched with the pull rope to pull, fix and adjust the finger bone cutting position. The technical effects that the cutting range is expanded, the positioning flexibility is improved, the application range is expanded, and the cutting precision is improved can be achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of medical equipment, in particular to a cutting device for interfacing hand bone surgery. BACKGROUND

[0002] Hand bone interfacing surgery is one of the common types of hand surgery, and is mainly applied to bone interfacing treatment in the case of finger bone fracture, fracture and the like. In the surgical process, the cutting device is an indispensable important tool, which is responsible for accurate cutting of the finger bone, so as to facilitate subsequent interfacing and fixing. However, with the continuous development of medical technology and the increasing requirement of patients on the effect of surgery, the traditional cutting device has been difficult to meet the needs of modern hand surgery. Therefore, the research and improvement of the cutting device for interfacing hand bone surgery is particularly important.

[0003] For cutting of the hand bone, the Chinese invention patent with the publication number CN114587493B discloses a cutting device for interfacing hand bone surgery, which comprises a first metal frame, a second metal frame, a third metal frame and a fourth metal frame, the first metal frame and the second metal frame are combined, the third metal frame and the fourth metal frame are combined, and the inner side of the first metal frame is provided with an upper slide. The invention is provided with a finger positioning mechanism, a cutter head driving mechanism and a movable cutting mechanism, which can conveniently position and clamp the finger to be cut during surgery, increase the stability of work, and make the cutting effect more smooth. The position of the cutter head can be driven conveniently, and the cutting operation can be performed more quickly. The positioning metal frame translates up and down to cut, which is simple and fast, and does not deviate. It is convenient to better observe and has better effect.

[0004] The above-mentioned scheme improves the cutting efficiency to a certain extent when positioning and cutting the hand bone, but in actual use, since the size of the metal frame for positioning and cutting the finger in the prior art is fixed, the cutting position cannot be adjusted according to the specific injury condition of the finger bone and the surgical requirement, so that the surgeon cannot accurately cut the part of the finger bone that is broken or needs to be cut, the flexibility is low, and the surgical effect and the recovery of the patient are affected. Moreover, the shape and size of the finger bone vary from person to person, and the injury conditions are also different. In particular, the proximal phalanx of the finger bone cannot be fixed and cut, that is, the phalanx near the metacarpal end cannot be fixed and cut, the cutting point is too limited, and the applicable range is low. SUMMARY

[0005] The application provides a cutting device for interfacing hand bone surgery, which solves the technical problems of limited cutting range, low positioning flexibility, low applicable range and low cutting precision in the prior art, and achieves the technical effects of expanded cutting range, improved positioning flexibility, expanded applicable range and improved cutting precision.

[0006] The application provides a cutting device for metacarpal surgery, which comprises a bottom plate, a front end module fixed on the bottom plate, a rear end module and a cutting knife. The rear end module comprises a fixed plate and a sliding plate, the sliding plate is slidingly connected to the right end of the fixed plate, a locking ring is slidingly connected inside the fixed plate, and the locking ring is connected to the sliding plate through a pull rope, so as to pull and fix the phalange by moving the sliding plate and driving the locking ring. An adjusting unit is arranged between the fixed plate and the sliding plate, and is used for pulling and fixing and adjusting the cutting position of the phalange in cooperation with the pull rope.

[0007] Further, the adjusting unit has two and is arranged in mirror image, comprising a support plate, a pull plate and a bolt. The support plate is fixed on the fixed plate and is threadedly connected with the bolt; and the pull plate is fixed on the sliding plate and is fixedly connected with the bolt.

[0008] Further, the front end module and the rear end module are placed transversely, and a placing groove is formed in the middle of each of the front end module and the rear end module; the cutting knife is arranged between the front end module and the rear end module and feeds back to cut.

[0009] Further, the locking ring has two, which are respectively fixed inside the front end module and slidingly connected inside the rear end module, and are respectively used for fixing the front end and the rear end of the phalange cutting position. The locking ring has two parts, which are a fixed ring and a fastening ring; the fixed ring is an outer ring and is used for preliminarily fixing the phalange; and the fastening ring is located inside the fixed ring and is used for circumferentially pressurizing and fixing the phalange.

[0010] Further, the fastening ring is a capsule structure, the inside of which is filled with water to pressurize and fix the phalange, the fastening ring is communicated with a water pump through an external pipeline, and the inner diameter of the fastening ring is 0.5 to 0.8 times of the initial state in the fully expanded state.

[0011] Further, a plurality of negative pressure rings are uniformly arranged on the side wall of the inner circle of the fastening ring along the circumference, the negative pressure ring is a ring-shaped suction disc structure and is made of rubber, and is used for forming negative pressure between the phalange and the negative pressure ring when the negative pressure ring is close to the surface of the phalange in the pressurized state of the fastening ring, so as to adsorptively fix the phalange.

[0012] Further, the negative pressure ring is a hollow capsule structure, and paraffin is filled in the inside of the negative pressure ring, so as to fix the position of the soft tissue outside the phalange in the pulling and fixing process after the paraffin is melted.

[0013] Further, the sliding plate and the locking ring inside the rear end module, the front end module and the locking ring inside it are provided with regulating components, and the two regulating components cooperate with each other and dynamically regulate the pulling of the different positions of the fingers according to the change of the cutting position of the fingers in the cutting process.

[0014] Further, the regulating component includes a pull belt, a bracket and a roller; The pull belt is provided with two groups, each group of pull belts includes a plurality of pull belts, each group of pull belts is uniformly sleeved on the corresponding locking ring and is staggered with the negative pressure ring, and is used for circumferential pulling of the soft tissue on the surface of the finger; The bracket is provided with two groups, which are respectively fixed on the front end module and the sliding plate, each group of brackets includes a plurality of circumferentially arranged brackets, which are one-to-one corresponding to the pull belts; Each of the brackets is fixed with a roller, one end of the pull belt is sleeved on the corresponding locking ring, and the other end is sleeved on the corresponding roller, which is used to drive the pull belt to rotate under the action of the roller, and then pull the soft tissue of the finger.

[0015] Further, each of the rollers is provided with a motor inside, each motor is controlled by an external control system respectively, and the corresponding pull belt is driven to rotate by different motors, and then the different positions of the soft tissue on the outside of the finger are pulled asynchronously.

[0016] One or more technical solutions provided in the application have at least the following technical effects or advantages: The distance between the two is accurately adjusted by the bolt, the fine adjustment mechanism is adopted, the device can flexibly adapt to the size, shape and damage of different finger bones, the finger is sleeved into the locking ring, and the pulling rope is used for pulling and fixing, which effectively solves the technical problems of limited cutting range, low positioning flexibility, low application range and low cutting precision in the prior art, and realizes the technical effects of expanding the cutting range, improving the positioning flexibility, expanding the application range and improving the cutting precision. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure diagram of the cutting device for interfacing finger bone surgery.

[0018] Figure 2 It is a longitudinal full section view of the cutting device for interfacing finger bone surgery.

[0019] Figure 3 It is a perspective view of the rear end module of the cutting device for interfacing finger bone surgery.

[0020] Figure 4 It is a side perspective view of the rear end module of the cutting device for interfacing finger bone surgery.

[0021] Figure 5 It is a perspective view of the locking ring and sliding plate of the cutting device for interfacing hand bone surgery.

[0022] Figure 6 It is a right view of the locking ring and sliding plate of the cutting device for interfacing hand bone surgery.

[0023] Figure 7 It is a perspective view of the locking ring of the cutting device for interfacing hand bone surgery.

[0024] Figure 8 It is a full section schematic view of the locking ring of the cutting device for interfacing hand bone surgery.

[0025] Figure 9 It is a perspective view of the cutting device for interfacing hand bone surgery. Figure 8 It is a partial enlarged view of A in the cutting device for interfacing hand bone surgery.

[0026] Figure 10 It is a perspective view of the front end module of the cutting device for interfacing hand bone surgery.

[0027] Figure 11 It is a perspective view of the cutting device for interfacing hand bone surgery. Figure 10 It is a partial enlarged view of B in the cutting device for interfacing hand bone surgery.

[0028] Figure 12 It is a force diagram when the cutting device for interfacing hand bone surgery is used to pull and fix on both sides of the cutting position of the finger.

[0029] In the figure: 100, base plate; 110, front end module; 111, placing groove; 120, rear end module; 121, fixed plate; 122, sliding plate; 130, cutting knife; 140, locking ring; 141, fixed ring; 142, fastening ring; 150, pull rope; 160, negative pressure ring; 161, paraffin; 180, control assembly; 181, pull belt; 182, support; 183, roller; 200, adjusting unit; 210, support plate; 220, pull plate; 230, bolt. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the present application are shown; however, the present application can be realized in many different forms and is not limited to the embodiments described herein; on the contrary, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0031] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar terms used herein are for illustrative purposes only and are not intended to be limiting.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0033] Reference should be made to Figure 1 , the overall structure of the cutting device for interfacing hand bone surgery; the cutting device for interfacing hand bone surgery of the application adjusts the distance between the two by bolts 230, and this fine adjustment mechanism enables the device to flexibly adapt to the size, shape and damage of different finger bones; by fitting the finger into the locking ring 140 and pulling the rope 150 for fixation, the stability of the finger during cutting can be ensured; the technical effects of expanding the cutting range, improving the positioning flexibility, expanding the application range and improving the cutting precision are achieved.

[0034] Embodiment one: as Figures 1 to 5 shown, the cutting device for interfacing hand bone surgery of the application, comprising a bottom plate 100, a front end module 110 fixed on the bottom plate 100, a rear end module 120 and a cutting knife 130; The rear end module 120 includes a fixed plate 121 and a sliding plate 122, the sliding plate 122 is slidingly connected to the right end of the fixed plate 121, the fixed plate 121 is slidingly connected with a locking ring 140 inside, the locking ring 140 is connected with the sliding plate 122 through a pull rope 150, for pulling and fixing the finger bones by moving the sliding plate 122 to drive the locking ring 140; An adjusting unit 200 is arranged between the fixed plate 121 and the sliding plate 122, the adjusting unit 200 is used to adjust the cutting position of the finger bones by cooperating with the pull rope 150 to pull and fix.

[0035] The adjusting unit 200 has two and is arranged in mirror image, including a support plate 210, a pulling plate 220 and a bolt 230; The support plate 210 is fixed on the fixed plate 121 and is threadedly connected with the bolt 230; the pulling plate 220 is fixed on the sliding plate 122 and is fixedly connected with the bolt 230.

[0036] The front end module 110 and the rear end module 120 are placed transversely and each has a placement slot 111 in the middle, and the cutting knife 130 is arranged between the front end module 110 and the rear end module 120 and feeds back to cut.

[0037] The front end module 110 and the rear end module 120 are made of transparent polycarbonate material, which facilitates the doctor to observe the incision, and the cutting knife 130 is used for cutting the phalanx, preferably a phalanx saw, which is a prior art and will not be described here.

[0038] In actual operation, the steps of the embodiment are as follows: first, place the phalanx to be cut in the placement slot 111 of the front end module 110 and the rear end module 120, and adjust the distance between the fixed plate 121 and the sliding plate 122 in the rear end module 120 according to the size and shape of the phalanx through the bolt 230; then, the locking ring 140 is sleeved on the phalanx, and the tension of the pull rope 150 is adjusted to ensure the stability of the phalanx during cutting, and finally, the cutting knife 130 is started to cut the phalanx, and the cutting is completed.

[0039] The technical solutions in the above embodiment of the application have at least the following technical effects or advantages: By dividing the rear end module 120 into the fixed plate 121 and the sliding plate 122, this split design allows the distance between the two to be accurately adjusted by the bolt 230 in the adjusting unit 200, and this fine adjustment mechanism enables the device to flexibly adapt to the size, shape and damage of different phalanges, especially for the difficult-to-fix parts such as the proximal phalanx, providing a wider range of applications; by sleeving the phalanx into the locking ring 140 and pulling it through the pull rope 150, this fixing method is not only simple and effective, but also ensures the stability of the phalanx during cutting, prevents cutting deviation or accidents caused by movement of the phalanx, and also ensures the comfort and firmness of the phalanx sleeve.

[0040] By setting the front end module 110 and the rear end module 120 in one piece, the design simplifies the positioning step in the operation process and reduces the positioning error caused by separation of parts. At the same time, this overall structure also improves the stability and durability of the device, and by accurately adjusting the length of the rear end module 120 and the position of the locking ring 140, the cutting position of the phalanx can be accurately positioned, which helps to improve the accuracy and success rate of the operation.

[0041] Example 2: Considering that the size and shape of finger bones vary among different patients during the traction process, sufficient stability may not be provided during traction positioning. Especially during surgery, the fingers may experience slight displacement due to external force or patient movement, leading to inaccurate positioning and affecting the cutting precision and surgical outcome, thus impacting subsequent hand bone ligation and fixation. To ensure effective hand bone positioning during the cutting process and improve the smoothness of the hand bone cut surface, this application proposes the following technical solution to address the above-mentioned technical problems: like Figures 5 to 9 As shown, there are two locking rings 140, which are fixed inside the front module 110 and slidably connected inside the rear module 120, respectively, and are used to fix the front and rear ends of the finger cutting position; the locking ring 140 has two parts, namely a fixing ring 141 and a fastening ring 142. The fixing ring 141 is an outer ring used for initial fixation of the finger bones; the fastening ring 142 is located inside the fixing ring 141 and is used for circumferential pressure fixation of the finger bones.

[0042] The fastening ring 142 is a capsule structure, which is filled with water to pressurize and fix the finger. The fastening ring 142 is connected to the water pump through an external pipe. The inner diameter of the fastening ring 142 in the fully expanded state is 0.5 to 0.8 times that in the initial state.

[0043] The inner sidewall of the fastening ring 142 is uniformly provided with a plurality of negative pressure rings 160 along its circumference. The negative pressure ring 160 is a ring suction cup structure made of rubber. It is used to create negative pressure between the finger and the negative pressure ring 160 when the fastening ring 142 is pressurized and the negative pressure ring 160 is close to the finger surface, thereby adsorbing and fixing the finger.

[0044] This application uses two locking rings 140, located in the front-end module 110 and the rear-end module 120 respectively, to fix the front and rear ends of the finger cutting position. This more comprehensively restricts finger displacement and effectively prevents minor displacement of the finger due to external force or patient movement during surgery, avoiding inaccurate positioning and providing a stable foundation for subsequent cutting operations. By injecting water, a negative pressure state is created between the negative pressure ring 160 and the finger bone. This negative pressure is used to adhere to the finger surface, further enhancing positioning stability and ensuring that the finger remains in a fixed position during cutting. Furthermore, based on the enhanced positioning stability achieved by adhering to the finger under negative pressure, the pull rope 150 can more effectively pull the soft tissue of the finger to both sides, making the cutting position more clearly exposed, reducing the interference of soft tissue on the cutting process. This allows the doctor to observe the surgical site more intuitively, accurately perform the cutting operation, facilitate cutting, improve the precision and safety of the surgery, ensure a flat finger bone cut surface, which is beneficial for subsequent hand bone docking and fixation, and improve the surgical outcome.

[0045] The application provides circumferential pressure to the fingers by filling water into the inside of the fastening ring 142, and the water expands inwardly to adapt to the fixing requirements of different sizes of fingers, solves the positioning difficulty problem caused by different sizes and shapes of finger bones of different patients, and improves the universality and applicability of the equipment.

[0046] Example Three: In order to improve the fixing effect on the fingers, the application proposes the following technical solutions to solve the above technical problems, specifically: As shown in Figure 8 and Figure 9 , the negative pressure ring 160 is a hollow capsule structure, and paraffin 161 is contained in the inside of the negative pressure ring 160, which is used for position fixing of the soft tissue outside the finger bone after the paraffin 161 melts during the pulling and fixing process of the finger.

[0047] During the cutting process, the relative positional relationship between the finger bone and the soft tissue is easily affected, and the fixed structure formed after the paraffin 161 solidifies provides additional support for the finger bone and the soft tissue. Under the pulling action of the pull rope 150 on the finger bone and the soft tissue, the paraffin 161 solidifies to fix the shape of the soft tissue outside the finger bone, maintains the normal anatomical relationship between them, and helps to maintain the normal function and shape of the finger after the operation. This multi-dimensional fixing method from surface adsorption to internal soft tissue shape greatly enhances the positioning and fixing effect of the finger bone and the soft tissue, and ensures the accuracy of the cutting process.

[0048] Because the anatomical structures of fingers of different patients are different, the traditional fixing method may not completely fit the complex shape of the finger, and the paraffin 161 can fit the actual shape of the finger bone and the soft tissue outside after melting. In particular, the paraffin 161 provides better positioning effect according to the characteristics that the finger bone is thick at both ends and thin in the middle, and forms a fixed support structure matched with the shape of the finger after solidification, better adapts to the complex anatomical structure of the finger, improves the accuracy and stability of the fixing, and ensures the stability and safety of the operation. During the operation, external force may cause stress concentration between the finger bone and the soft tissue, affecting the operation effect and postoperative recovery. The supporting effect of the paraffin 161 can disperse the stress, reduce the stress concentration, reduce the risk of damage to the surrounding tissue, promote the healing and rehabilitation of the finger, and the solidification and melting characteristics of the paraffin 161 can adapt to the requirements of different operation stages.

[0049] Example Four: In order to prevent the soft tissue outside the finger bone from tearing during cutting after being pulled, causing uneven cutting surface and affecting subsequent hand bone butt joint suture, in order to improve the postoperative recovery effect and the accuracy of cutting of the finger (including the hand bone and the soft tissue), the application proposes the following technical solutions to solve the above technical problems, specifically: As shown in Figure 2 , Figure 6、 Figures 10 to 12 As shown, the sliding plate 122 and the locking ring 140 inside the rear end module 120 are provided with a regulating assembly 180, and the front end module 110 and the locking ring 140 inside the front end module 110 are provided with a regulating assembly 180, and the two regulating assemblies 180 cooperate with each other and dynamically regulate the pulling of the different positions of the finger according to the change of the cutting position of the finger in the cutting process.

[0050] The regulating assembly 180 comprises a pull belt 181, a support 182 and a roller 183. The pull belt 181 is provided with two groups, each group of pull belts 181 comprises a plurality of pull belts 181, each group of pull belts 181 is uniformly sleeved on the corresponding locking ring 140 and is staggered with the negative pressure ring 160, and is used for circumferentially pulling the soft tissue on the surface of the finger. The support 182 is provided with two groups, which are respectively fixed on the front end module 110 and the sliding plate 122, each group of supports 182 comprises a plurality of circumferentially arranged supports 182, which are one-to-one corresponding to the pull belts 181. Each support 182 is fixed with a roller 183, one end of the pull belt 181 is sleeved on the corresponding locking ring 140, and the other end is sleeved on the corresponding roller 183, which is used for driving the pull belt 181 to rotate under the action of the roller 183, and then pulling the soft tissue of the finger.

[0051] Each roller 183 is provided with a motor inside, each motor is controlled by an external control system respectively, and the corresponding pull belt 181 is driven to rotate by different motors, and then the different positions of the soft tissue outside the finger are asynchronously pulled.

[0052] In actual use, first, after the finger sleeve is set into the two fastening rings 142, warm water is filled into the inside of the fastening rings 142 to make the fastening rings 142 expand, and at the same time, the paraffin 161 melts and adapts to the size of the finger and the external soft tissue. The negative pressure ring 160 is adsorbed and fixed to the surface of the finger by negative pressure under the action of the fastening ring 142, so that the fastening ring 142 fixes the two ends of the cutting position of the finger; then, the bolt 230 is manually rotated to adjust the distance between the fixed plate 121 and the sliding plate 122, and the finger is fixed by pulling through the cooperation of the fixed ring 141 and the pull rope 150, to ensure the stability of the finger during the operation; at the same time, cold water is filled into the inside of the fastening ring 142, so that the paraffin 161 is solidified under the condition of adhering to the soft tissue of the finger and being pulled, and the soft tissue is fixed after being pulled by the paraffin 161; finally, the cutting knife 130 is started and fed backward. In the cutting process of backward feeding, the cutting position of the finger (i.e. the amount of backward feeding) is cut by the external control system cooperating with the cutting knife 130. The external control system controls the rollers 183 on the left and right sides corresponding to the cutting position to synchronously pull the pull belt 181 at the corresponding position (because the finger is a flat elliptical structure, the force is not only pulled left and right but also pulled up and down at the symmetrical position in front and back), and the two rollers 183 in front and back of the corresponding position are synchronously pulled to rotate the pull belt 181 at the corresponding position. The pull belt 181 contacts the surface of the finger, so that the corresponding pull belt 181 can cooperate with the change of the cutting depth (i.e. the amount of backward feeding of the cutting knife 130) to gradually pull the soft tissue at the corresponding position on the finger, effectively preventing the soft tissue from being unevenly cut.

[0053] The external control system is a PLC programmable controller for controlling the rotation of the rollers 183 at different positions, and then pulling different positions on the finger in the circumferential direction. It is preferably a Siemens S7-1200 series, which is a prior art and will not be described here.

[0054] The application avoids excessive pulling and damage to the soft tissue during the cutting process by gradually pulling and dynamically adjusting the pulling force, and the soft tissue is well protected and pulled during the cutting process. The cut surface of the soft tissue after cutting is more even, which helps to preserve more soft tissue structure and function, reduces the difficulty of suturing, improves the quality of suturing, is conducive to the butt joint of the subsequent hand bones, promotes the healing and recovery effect of the wound after the operation.

[0055] During the cutting process, the regulating assembly 180 can dynamically adjust the pulling force and position of the pull belt 181 according to the change of the amount of backward feeding of the cutting knife 130 (i.e. the cutting depth). This gradual pulling method ensures that the soft tissue is always moderately pulled during the cutting process, so that it will not be torn due to excessive pulling, and it will not be unevenly cut due to insufficient pulling.

[0056] A plurality of pull tapes 181 are arranged, and asynchronous pulling of the soft tissue outside the finger bones is performed from a plurality of points, so that the stress of the soft tissue during cutting is more uniform, not only reducing the cutting error caused by uneven local stress, but also reducing the risk during the operation, such as soft tissue tearing, cutting error, etc., improving the cutting accuracy and safety of the operation; and the tension and position can be dynamically adjusted according to the actual situation during the operation through the regulating assembly 180, so that the doctor can more flexibly cope with various surgical situations, and the controllability of the operation is enhanced.

[0057] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cutting device for metacarpal surgery, characterized by, It includes a base plate (100), a front end module (110) fixed on the base plate (100), a rear end module (120) and a cutting knife (130); The rear end module (120) includes a fixed plate (121) and a sliding plate (122), the sliding plate (122) is slidingly connected to the right end of the fixed plate (121), the inside of the fixed plate (121) is slidingly connected with a locking ring (140), the locking ring (140) is connected with the sliding plate (122) through a pull rope (150), and the locking ring (140) is used for pulling and fixing the phalange by moving the sliding plate (122). The adjusting unit (200) is arranged between the fixed plate (121) and the sliding plate (122), and is used for cooperating with the pull rope (150) to pull and fix and adjust the cutting position of the phalange.

2. The cutting guide for fusing hand surgery of claim 1, wherein, The adjusting unit (200) has two and is arranged in mirror image, including a support plate (210), a pulling plate (220) and a bolt (230). The support plate (210) is fixed on the fixed plate (121) and is in threaded connection with the bolt (230); the pulling plate (220) is fixed on the sliding plate (122) and is in fixed connection with the bolt (230).

3. The cutting guide for fusing hand surgery of claim 1, wherein, The front end module (110) and the rear end module (120) are placed transversely, and a placing groove (111) is formed in the middle of each of them, the cutting knife (130) is arranged between the front end module (110) and the rear end module (120) and feeds back to cut.

4. The cutting guide for fusing hand surgery of claim 3, wherein, The locking ring (140) is provided with two, which are respectively fixed in the inside of the front end module (110) and slidingly connected in the inside of the rear end module (120), and are respectively used for fixing the front end and the rear end of the finger cutting position; The locking ring (140) has two parts, which are divided into a fixed ring (141) and a fastening ring (142); the fixed ring (141) is an outer ring, which is used for preliminarily fixing the phalange; the fastening ring (142) is located inside the fixed ring (141), which is used for ring-shaped pressure fixing of the phalange.

5. A cutting guide for metacarpal surgery as claimed in claim 4, wherein, The fastening ring (142) is a capsule structure, which is internally filled with water to pressurize and fix the finger, the fastening ring (142) is communicated with a water pump through an external pipeline, and the inner diameter of the fastening ring (142) is 0.5-0.8 times of the initial state in the fully expanded state.

6. A cutting guide for metacarpal surgery as claimed in claim 5, wherein, The inner wall of the fastening ring (142) is uniformly provided with a plurality of negative pressure rings (160) along the circumference, the negative pressure ring (160) is a ring-shaped suction disc structure, which is made of rubber material, and is used for forming negative pressure between the finger and the negative pressure ring (160) when the negative pressure ring (160) is close to the surface of the finger in the pressurized state of the fastening ring (142), so as to adsorb and fix the finger.

7. A cutting guide for metacarpal surgery as claimed in claim 6, wherein, The negative pressure ring (160) is a hollow capsule structure, and paraffin (161) is contained in the inside, which is used for position fixing of the soft tissue outside the phalange in the pulling and fixing process after the paraffin (161) is melted.

8. A cutting guide for metacarpal surgery as claimed in claim 7, wherein, The sliding plate (122) is provided with a regulating assembly (180) between the locking ring (140) located inside the rear end module (120) and the front end module (110) and the locking ring (140) located inside the front end module (110), and the two regulating assemblies (180) cooperate with each other and dynamically regulate the pulling of the different positions of the finger according to the change of the cutting position of the finger in the cutting process.

9. A cutting guide for metacarpal surgery as claimed in claim 8, wherein, The regulating assembly (180) comprises a pull belt (181), a support (182) and a roller (183). The pull belt (181) is provided with two groups, each group of pull belts (181) comprises a plurality of pull belts (181), each group of pull belts (181) is uniformly sleeved on the corresponding locking ring (140) and is staggered with the negative pressure ring (160), and is used for circumferentially pulling the soft tissue on the surface of the finger. The support (182) is provided with two groups, which are respectively fixed on the front end module (110) and the sliding plate (122), each group of supports (182) comprises a plurality of circumferentially arranged supports (182), which are one-to-one corresponding to the pull belts (181). Each support (182) is fixed with a roller (183), one end of the pull belt (181) is sleeved on the corresponding locking ring (140), and the other end is sleeved on the corresponding roller (183), which is used for driving the pull belt (181) to rotate under the action of the roller (183), and then pulling the soft tissue of the finger.

10. The cutting guide for fusing hand surgery of claim 9, wherein, Each roller (183) is provided with a motor inside, each motor is controlled by an external control system, and the corresponding pull belt (181) is driven to rotate by different motors, and then the soft tissue at different positions of the finger is gradually pulled.

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