A fine reduction instrument for metacarpal and phalangeal fractures

Abstract

The present invention discloses a fine reduction instrument for metacarpal and phalangeal fractures, belonging to the technical field of fracture reduction. The instrument comprises a first handle, and a second handle is hinged on the first handle, and a pressing ring is fixedly installed on the first handle and the second handle. Through the cooperation of the spiral groove and the thin rod, when the initial clamping is completed, the hand of the medical staff is out of contact with the elastic pad on the second handle, at which time the first spring stretches and drives part of the thin rod to insert into the spiral groove. Since the linkage block is fixedly connected to the second handle, the user can then rotate the horizontal rod. During the rotation of the horizontal rod, the second handle is driven to rotate slightly around the hinge point through the spiral groove, the thin rod, the mounting plate, and the mounting block, so that the clamping assembly can be fine-tuned. After the patient's bones are initially fixed, the medical staff can immediately fine-tune the arc of the patient's clamping, which can improve the clamping effect while reducing the fine-tuning time, thereby reducing the patient's surgical risk.

Description

Technical Field

[0001] The invention relates to the technical field of fracture reduction, and more particularly to a fine reduction instrument for metacarpal and phalangeal fractures. Background Art

[0002] The hand bones between the phalanges and the carpal bones are called metacarpal bones, which are composed of five metacarpal bones. Each metacarpal bone consists of one body and two ends. The distal end or metacarpal head articulates with the proximal phalanges and forms the knuckles of a fist; the proximal end or metacarpal base articulates with the carpal bones.

[0003] Metacarpal fracture is one of the most common diseases in orthopedics. At present, in fracture open reduction and internal fixation surgery, bone clamps and other instruments are often used to clamp the two ends of the fracture for reduction, and then fix it with internal fixation materials; at present, traditional bone clamps do not have fine-tuning functions. During the process of medical staff reducing the patient's bones, if the force is too small, it is difficult to align the fracture, thereby affecting the recovery effect. If the force is too large, it may cause secondary damage to the patient's fracture.

[0004] Based on the above technical problems, the existing technology has been improved to a certain extent. Through the cooperation between the fastening nut and the screw rod, after the medical staff initially clamps the patient's fracture, they can rotate the fastening nut to drive the handle to move for fine adjustment according to the clamping situation, so as to facilitate the medical staff to adjust the clamping arc;

[0005] However, in actual production operations, when the medical staff turns the handle to initially clamp the fracture, the distance between the fastening nut and the handle will gradually become farther, and then the medical staff will need to spend a long time to turn the fastening nut and make the fastening nut contact with the handle before driving the handle to fine-tune the clamping arc. However, on the operating table, every second counts, and wasting time on turning the fastening nut undoubtedly increases the patient's surgical risk. Summary of the invention

[0006] The purpose of the present invention is to provide a fine reduction instrument for metacarpal and phalangeal fractures.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A fine reduction instrument for metacarpal and phalangeal fractures, comprising a first handle, a second handle hinged on the first handle, a pressing ring fixedly mounted on the first handle and the second handle, and a clamping assembly for clamping bones at one end of the first handle and the second handle away from the pressing ring;

[0009] The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs, each of which is provided with a plurality of springs.

[0010] Optionally, the control component includes an elastic pad fixedly mounted on the inner side of a pressing ring, a cavity being formed on the elastic pad, a first air pipe extending into the mounting cavity being fixedly mounted on the cavity, and an end of the first air pipe away from the cavity is located below the mounting plate, and a limit assembly is provided on the horizontal rod.

[0011] Optionally, the limit assembly includes a rectangular groove opened on the mounting block, a mounting groove is opened on the horizontal rod, a limit rod is slidably installed in the mounting groove and slidably cooperates with the rectangular groove, a limit plate is fixedly installed on one end of the limit rod away from the rectangular groove, and a second spring is fixedly installed between the limit plate and the horizontal rod.

[0012] Optionally, a rectangular socket is provided on the side wall of the first handle and the second handle, and a disassembly groove connected to the socket is provided on the end of the first handle and the second handle away from the pressing ring, an insertion rod is slidably installed in the socket, a first magnet is fixedly installed on the insertion rod, a second magnet that attracts the first magnet is embedded in the socket, and the insertion rod slides with the clamping assembly.

[0013] Optionally, the clamping assembly includes a mounting rod that slides with the disassembly groove, the mounting rod is provided with a limit opening that cooperates with the socket, a clamping block is fixedly installed on the end of the mounting rod away from the disassembly groove, the clamping block is provided with a clamping groove, a buffer plate is slidably installed in the clamping groove, a third spring is fixedly installed between the buffer plate and the clamping groove, and an arc-shaped plate for clamping bones is provided on the side wall of the buffer plate away from the third spring.

[0014] Optionally, the arc plate includes a first clamping plate fixedly mounted on the buffer plate, a sliding groove is provided on the side wall of the buffer plate away from the third spring, a second clamping plate is slidably mounted in the sliding groove, a threaded rod extending to the outside is rotatably mounted on the side wall of the sliding groove, and the threaded rod is threadably matched with the second clamping plate, and a fixing component matching with the buffer plate is provided on the mounting cavity.

[0015] Optionally, the fixing assembly includes a second air pipe inserted in the installation cavity, and the second air pipe is located above the installation plate, the first handle and the second handle are both provided with grooves, a fixing rod is slidably installed in the groove, and a fourth spring is fixedly installed between the fixing rod and the groove, the buffer plate is evenly provided with fixing grooves, and a third air pipe connected to the second air pipe is inserted in the side wall of the groove. Optionally, one end of the fixing rod close to the fixing groove is a cone.

[0016] Optionally, the surface of the thin rod is a smooth mirror surface.

[0017] Optionally, a locator is embedded on the first clamping plate.

[0018] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0019] In the above scheme, through the cooperation of the spiral groove and the thin rod, when the initial clamping is completed, the medical staff's hand is out of contact with the elastic pad on the second handle. At this time, the first spring stretches and drives part of the thin rod to insert into the spiral groove. Since the connecting block is fixedly connected to the second handle, the user can then rotate the horizontal rod. During the rotation of the horizontal rod, the second handle is driven to rotate slightly around the hinge point through the spiral groove, the thin rod, the mounting plate, and the connecting block, so that the clamping assembly can be fine-tuned. After the patient's bones are initially fixed, the medical staff can immediately fine-tune the arc of the patient's clamping, which can improve the clamping effect while reducing the fine-tuning time, thereby reducing the patient's surgical risk.

[0020] By setting the third spring, in the process of the two clamping blocks approaching each other, the arc plate is driven by the buffer plate to gradually contact the bone at the fracture site and clamp the patient's fracture site. Then the patient's fracture site will exert a reaction force on the arc plate. Under the action of the reaction force, the arc plate squeezes the third spring through the buffer plate. That is, by setting the third spring, the third spring can buffer the fracture site in the process of the arc plate clamping the fracture site, thereby reducing the impact of the arc plate on the bone during operation, further reducing the risk of surgery.

[0021] By setting a fixing rod, when the fine-tuning is completed, the first spring drives the mounting plate to move downward through the limit plate. In the process of the mounting plate moving downward, the space above the displacement mounting plate in the mounting cavity draws air from the groove through the second air pipe and the third air pipe, and then the fourth spring stretches and drives the fixing rod to be inserted into the fixing groove. That is, the buffer plate is fixed at this time, thereby effectively preventing the buffer plate from driving the arc plate to move, affecting the fixation effect of the patient's bones and increasing the risk of surgery, thereby further reducing the risk of surgery.

[0022] By setting a limit rod, when the fine-tuning is completed, the medical staff can loosen the limit plate, and then the second spring contracts and drives the limit rod to be inserted into the rectangular groove through the limit plate, and then the horizontal rod is limited and cannot rotate under the action of the rectangular groove and the limit rod. That is, at this time, the second handle is fixed under the action of the thin rod and the spiral groove, so that the curvature of the clamping assembly is fixed, effectively preventing the curvature of the clamping assembly from changing during the operation and affecting the surgical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Combination diagram of the linkage block, thin rod and limit rod at A in the middle;

[0026] Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle;

[0027] Figure 4 For the present invention Figure 1 Front cross-sectional view of the mounting rod and the insertion rod at C in the middle;

[0028] Figure 5 For the present invention Figure 1 The front cross-sectional view of the clamping plate, mounting rod and buffer plate at D in the middle;

[0029] Figure 6 is a cross-sectional view of the elastic pad of the present invention;

[0030] Figure 7 It is a combined cross-sectional view of the mounting block, the horizontal rod and the limiting rod of the present invention;

[0031] Figure 8 It is a top cross-sectional view of the clamping assembly of the present invention.

[0032] [reference numerals]

[0033] 1. First handle; 2. Second handle; 3. Pressing ring;

[0034] 4. fine adjustment assembly; 41. mounting frame; 42. mounting block; 43. horizontal rod; 44. linkage block; 45. mounting cavity; 46. thin rod; 47. spiral groove; 48. limit plate; 49. first spring; 410. mounting plate;

[0035] 5. control component; 51. elastic pad; 52. cavity; 53. first air pipe;

[0036] 6. Limiting assembly; 61. Rectangular groove; 62. Limiting rod; 63. Limiting plate; 64. Second spring;

[0037] 71. Insertion rod; 72. First magnet; 73. Second magnet; 74. Limiting opening;

[0038] 8. Clamping assembly; 81. Mounting rod; 82. Clamping block; 83. Clamping groove; 84. Buffer plate; 85. Third spring; 86. Arc plate; 861. First clamping plate; 862. Second clamping plate; 87. Threaded rod;

[0039] 9. Fixing assembly; 91. Second air pipe; 92. Fixing rod; 93. Groove; 94. Fourth spring; 95. Third air pipe;

[0040] 10. Locator.

[0041] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0042] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0043] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0044] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0045] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0046] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0047] like Figures 1 to 8 As shown, an embodiment of the present invention provides a fine reduction instrument for metacarpal and phalangeal fractures, including the first handle 1, and the second handle 2 is hinged on the first handle 1, and the first handle 1 and the second handle 2 are both fixedly mounted with a pressing ring 3, and the first handle 1 and the second handle 2 are both provided with a clamping assembly 8 for clamping bones at one end away from the pressing ring 3.

[0048] The fine-tuning assembly 4 also includes a mounting frame 41 fixedly mounted on the side wall of the first handle 1 facing the second handle, a mounting block 42 is hinged on the mounting frame 41, a horizontal rod 43 is rotatably mounted on the mounting block 42 toward the second handle, the other end of the horizontal rod passes through the second handle, and a linkage block 44 is fixedly mounted on the side of the second handle 2 away from the first handle, a horizontal hole is provided on the linkage block 44 to slide with the horizontal rod 43, and a mounting cavity 45 is provided on the linkage block 44 at the upper half of the horizontal rod 43. A mounting plate 410 is installed in a vertical sliding seal in the mounting cavity 45, and a plurality of through holes are provided on the mounting plate 410. A thin rod 46 extending to the horizontal hole is vertically slidably installed in each through hole of the mounting plate. A spiral groove 47 for slidingly cooperating with the thin rod 46 is provided on the horizontal rod 43. A limit plate 48 is fixedly installed on the top wall of the through hole of the mounting plate through the thin rod 46, and the limit plate and the through hole form a limit. A first spring 49 is fixedly installed on the limit plate 48 and the top wall of the mounting cavity 45, and a control component 5 cooperating with the mounting plate 410 is provided on the pressing ring 3.

[0049] The control component 5 includes an elastic pad 51 fixedly mounted on the inner side of the pressing ring 3, a cavity 52 is opened on the elastic pad 51, a first air pipe 53 extending into the mounting cavity 45 is fixedly mounted on the cavity 52, and one end of the first air pipe 53 away from the cavity 52 is located below the mounting plate 410, and a limit assembly 6 is provided on the horizontal rod 43.

[0050] The limit assembly 6 includes a rectangular groove 61 opened on the mounting block 42, and a mounting groove is opened on the horizontal rod 43. A limit rod 62 is slidably installed in the mounting groove and slidably cooperates with the rectangular groove 61. A limit plate 63 is fixedly installed at one end of the limit rod 62 away from the rectangular groove 61. The limit plate is arranged at one end of the horizontal rod that passes through the second handle, and a second spring 64 is fixedly installed between the limit plate 63 and the horizontal rod 43.

[0051] When in use, the medical staff can first pass their fingers through the pressing ring 3. During the process of the medical staff's fingers passing through the pressing ring 3, the medical staff's fingers will squeeze the elastic pad 51. At this time, the elastic pad 51 is deformed and fits the medical staff's hand, thereby improving the comfort of the medical staff's hand. At the same time, after the elastic pad 51 is squeezed, the gas in the cavity 52 flows into the installation cavity 45 through the first air pipe 53, and drives the installation plate 410 to move upward. During the upward movement of the installation plate 410, the thin rod 46 is driven upward through the limit plate 48. At this time, the first spring 49 is compressed and has a tendency to recover, and then the user can drive the first handle 1 and the second handle 2 to rotate around the hinge point by pressing the ring 3, and then drive the clamping assembly 8 to clamp the patient's bone during the rotation of the first handle 1 and the second handle 2 around the hinge point, and the horizontal rod will be driven to move during the rotation of the first handle 1 and the second handle 2 around the hinge point, and the spiral groove on the horizontal rod will be driven to be located directly below the corresponding thin rod 46, and then after the clamping is completed, the medical staff can first break contact with the second handle 2 with their fingers, and at this time, the second handle 2 The elastic pad 51 stretches, and the cavity 52 inhales air from the mounting cavity 45 through the first air pipe 53, and then the first spring 49 stretches and drives the thin rod 46 to move downward through the limit plate 48, and at the same time, the mounting plate 410 is driven to reset downward during the downward movement of the limit plate 48, and part of the thin rod 46 will be inserted into the spiral groove 47 during the downward movement of the thin rod 46. Since the linkage block 44 is fixedly connected to the second handle 2, the user can then rotate the horizontal rod 43, and during the rotation of the horizontal rod 43, the spiral groove 47 is driven to rotate, and then during the rotation of the spiral groove 47, the thin rod is driven to move along the horizontal rod, and during the movement of the thin rod, the second handle is driven to rotate around the hinge point through the linkage block, and during the rotation of the second handle around the hinge point, the horizontal rod will rotate around the mounting block and around the mounting frame to ensure that the second handle can rotate around the hinge point normally, and then the clamping assembly 8 can be fine-tuned. After the patient's bones are initially fixed, the medical staff can immediately fine-tune the arc of the patient's clamping, which can improve the clamping effect while reducing the fine-tuning time, thereby reducing the patient's surgical risk.

[0052] When the operation is over, the medical staff can insert their fingers into the pressing ring 3 again. At this time, the gas in the cavity 52 on the elastic pad 51 flows into the installation cavity 45 again through the first air pipe 53, and drives the thin rod 46 to disengage from the spiral groove 47 through the installation plate 410 and the limit plate 48. At this time, the medical staff can use the first handle 1 and the second handle 2 to disengage the clamping assembly 8 from the patient, thereby preparing for work again.

[0053] When fine-tuning is needed, the medical staff can first pull the limit plate 63 and make the limit rod 62 disengage from the rectangular groove 61, so that the horizontal rod can rotate. At this time, the second spring 64 is stretched and has a tendency to recover. Then when the fine-tuning is completed, the medical staff can loosen the limit plate 63, and then the second spring 64 contracts and drives the limit rod 62 to be inserted into the rectangular groove 61 through the limit plate 63. Then, under the action of the rectangular groove 61 and the limit rod 62, the horizontal rod 43 is limited and cannot rotate. That is, at this time, under the action of the thin rod 46 and the spiral groove 47, the second handle 2 is fixed, so that the curvature of the clamping assembly 8 is fixed, effectively preventing the curvature of the clamping assembly 8 from changing during the operation and affecting the surgical effect.

[0054] like Figure 1 , Figure 4 , Figure 5 , Figure 8 As shown, a rectangular socket is provided on the side wall of the first handle 1 and the second handle 2, and a disassembly groove connected to the socket is provided on the end of the first handle 1 and the second handle 2 away from the pressing ring 3, an insertion rod 71 is slidably installed in the socket, a first magnet 72 is fixedly installed on the insertion rod 71, a second magnet 73 that attracts the first magnet 72 is embedded in the socket, and the insertion rod 71 is slidably matched with the clamping assembly 8.

[0055] The clamping assembly 8 includes a mounting rod 81 that slidably cooperates with the disassembly groove, and a limiting opening 74 that cooperates with the socket is provided on the mounting rod 81. A clamping block 82 is fixedly installed on the end of the mounting rod 81 away from the disassembly groove, and a clamping groove 83 is provided on the clamping block 82. A buffer plate 84 is slidably installed in the clamping groove 83, and a third spring 85 is fixedly installed between the buffer plate 84 and the clamping groove 83. An arc-shaped plate 86 for clamping bones is provided on the side wall of the buffer plate 84 away from the third spring 85.

[0056] The arc plate 86 includes a first clamping plate 861 fixedly mounted on the buffer plate 84, a sliding groove is provided on the side wall of the buffer plate 84 away from the third spring 85, a second clamping plate 862 is slidably mounted in the sliding groove, a threaded rod 87 extending to the outside is rotatably mounted on the side wall of the sliding groove, and the threaded rod 87 is threadedly matched with the second clamping plate 862, and a fixing component 9 matching with the buffer plate 84 is provided on the mounting cavity 45.

[0057] The fixing assembly 9 includes a second air pipe 91 inserted into the mounting cavity 45, and the second air pipe 91 is located above the mounting plate 410. A groove 93 is provided in the mounting rod, a fixing rod 92 is slidably installed in the groove 93, and a fourth spring 94 is fixedly installed between the fixing rod 92 and the groove 93. Fixing grooves are evenly provided on the buffer plate 84, and a third air pipe 95 connected to the second air pipe 91 is inserted on the side wall of the groove 93.

[0058] By adopting the above technical solution, before the operation, the medical staff can select a suitable clamping assembly 8 according to the patient's fracture condition, and then insert the mounting rod 81 on the clamping assembly 8 into the disassembly groove. When the limit opening 74 is aligned with the socket, the medical staff can insert the insertion rod 71 into the limit opening 74 through the socket, and then the insertion rod 71 is fixed in the limit opening 74 under the action of the first magnet 72 and the second magnet 73. When the clamping assembly 8 needs to be disassembled, the medical staff can first pull out the insertion rod 71, and then the medical staff can remove the clamping assembly 8 from the disassembly groove, which makes it convenient for the medical staff to select different clamping assemblies 8 according to the fracture condition, thereby improving the practicality of the device.

[0059] When the medical staff rotates the first handle 1 and the second handle 2 around the hinge point, the first handle 1 and the second handle 2 respectively drive the corresponding clamping blocks 82 to approach each other through the mounting rod 81, and in the process of the two clamping blocks 82 approaching each other, the buffer plate 84 drives the arc plate 86 to gradually contact the bone at the fracture site and clamp the fracture site of the patient, and then the fracture site of the patient will apply a reaction force to the arc plate 86, and under the action of the reaction force, the arc plate 86 squeezes the third spring 85 through the buffer plate 84, that is, by setting the third spring 85, the third spring 85 can buffer the fracture site in the process of the arc plate 86 clamping the fracture site, thereby reducing the impact of the arc plate 86 on the bone during operation, further reducing the risk of surgery.

[0060] In the process of the mounting plate 410 driving the thin rod 46 to move upward through the limit plate 48, the gas in the space above the displacement mounting plate 410 in the mounting cavity 45 is squeezed, and then the gas flows into the groove 93 through the second air pipe 91 and the third air pipe 95 and drives the fixing rod 92 to break contact with the fixing groove. At this time, the fourth spring 94 is compressed and has a tendency to recover. When the medical staff's fingers break contact with the second handle 2, the first spring 49 drives the mounting plate 410 to move downward through the limit plate 48. In the process of the mounting plate 410 moving downward, the space above the displacement mounting plate 410 in the mounting cavity 45 sucks air from the groove 93 through the second air pipe 91 and the third air pipe 95, and then the fourth spring 94 stretches and drives the fixing rod 92 to insert into the fixing groove. That is, the buffer plate 84 is fixed at this time, thereby effectively preventing the buffer plate 84 from driving the arc plate 86 to move, affecting the fixation effect of the patient's bones and increasing the surgical risk, thereby further reducing the surgical risk.

[0061] Before the operation, the medical staff can adjust the distance between the first clamping plate 861 and the second clamping plate 862 according to the patient's bone condition, that is, the medical staff can first rotate the threaded rod 87. Since the second clamping plate 862 is threadedly matched with the threaded rod 87, the second clamping plate 862 moves along the slide groove during the rotation of the threaded rod 87, which further improves the applicability of the instrument.

[0062] like Figure 8 As shown, one end of the fixing rod 92 close to the fixing groove is a conical surface.

[0063] By adopting the above technical solution, during the process of inserting the fixing rod 92 into the fixing groove, by making the end of the fixing rod 92 close to the fixing groove a tapered surface, the initial contact area between the fixing rod 92 and the fixing groove can be reduced, thereby facilitating the insertion of the fixing rod 92 into the fixing groove.

[0064] like Figure 2 As shown, the surface of the thin rod 46 is a smooth mirror surface.

[0065] By adopting the above technical solution, when the horizontal rod 43 drives the thin rod 46 to move through the spiral groove 47, the thin rod 46 and the spiral groove 47 will rub against each other. By setting the surface of the thin rod 46 to a smooth mirror surface, the friction force between the thin rod 46 and the spiral groove 47 can be reduced, thereby facilitating the spiral groove 47 to drive the thin rod 46 to move.

[0066] like Figure 8 As shown, a positioner 10 is embedded on the first clamping plate 861 .

[0067] By adopting the above technical solution, when the medical staff clamps the patient's bones, the fracture end can be preliminarily located through the locator 10, and then the doctor observes the positioning result to ensure accurate alignment.

[0068] The working process of the technical solution provided by the present invention is as follows:

[0069] First, the medical staff can use the first handle 1 and the second handle 2 to drive the clamping assembly 8 to perform preliminary clamping on the patient's bones. Then the medical staff can disengage their fingers from the elastic pad 51 on the second handle 2. At this time, the first spring 49 stretches and drives the thin rod 46 to contact the spiral groove 47. Then the medical staff can make fine adjustments by rotating the horizontal rod 43.

[0070] Through the limiting assembly 6, after the fine adjustment is completed, the limiting rod 62 will be inserted into the rectangular groove 61, and the curvature of the clamping assembly 8 will be fixed, effectively preventing the curvature of the clamping assembly 8 from changing during the operation and affecting the surgical effect.

[0071] Then, in the process of the clamping assembly 8 clamping the patient's bones, the patient's fracture will exert a reaction force on the arc plate 86. Under the action of the reaction force, the arc plate 86 squeezes the third spring 85 through the buffer plate 84. That is, by setting the third spring 85, the third spring 85 can buffer the fracture in the process of the arc plate 86 clamping the fracture, thereby reducing the impact of the arc plate 86 on the bones during operation.

[0072] Finally, through the fixing component 9, when the medical staff's fingers are out of contact with the second handle 2, the first spring 49 drives the mounting plate 410 to move downward through the limit plate 48. In the process of the mounting plate 410 moving downward, the space above the displacement mounting plate 410 in the mounting cavity 45 draws air from the groove 93 through the second air pipe 91 and the third air pipe 95, and then the fourth spring 94 extends and drives the fixing rod 92 to be inserted into the fixing groove. That is, the buffer plate 84 is fixed at this time, thereby effectively preventing the buffer plate 84 from driving the arc plate 86 to move, affecting the fixation effect of the patient's bones and causing surgical risks and improving efficiency.

[0073] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fine reduction instrument for metacarpal and phalangeal fractures, comprising a first handle, and a second handle is hinged on the first handle, and a pressing ring is fixedly installed on the first handle and the second handle, and a clamping assembly for clamping bones is provided at one end of the first handle and the second handle away from the pressing ring; It is characterized in that The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts. The camshaft is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts. The control assembly includes an elastic pad fixedly mounted on the inner side of the pressing ring, a cavity is formed on the elastic pad, a first air pipe extending into the mounting cavity is fixedly mounted on the cavity, and an end of the first air pipe away from the cavity is located below the mounting plate, and a limit assembly is provided on the horizontal rod; The limit assembly includes a rectangular groove opened on the mounting block, a mounting groove opened on the horizontal rod, a limit rod slidably installed in the mounting groove and slidingly matched with the rectangular groove, a limit plate is fixedly installed on one end of the limit rod away from the rectangular groove, and a second spring is fixedly installed between the limit plate and the horizontal rod.

2. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 1, characterized in that: A rectangular socket is provided on the side wall of the first handle and the second handle, and a disassembly groove connected to the socket is provided on the end of the first handle and the second handle away from the pressing ring. An insertion rod is slidably installed in the socket, a first magnet is fixedly installed on the insertion rod, a second magnet that attracts the first magnet is embedded in the socket, and the insertion rod is slidably matched with the clamping assembly.

3. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 2, characterized in that: The clamping assembly includes a mounting rod that slidably cooperates with the disassembly groove, a limiting opening that cooperates with the socket is provided on the mounting rod, a clamping block is fixedly installed on the end of the mounting rod away from the disassembly groove, a clamping groove is provided on the clamping block, a buffer plate is slidably installed in the clamping groove, a third spring is fixedly installed between the buffer plate and the clamping groove, and an arc-shaped plate for clamping bones is provided on the side wall of the buffer plate away from the third spring.

4. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 3, characterized in that: The arc plate includes a first clamping plate fixedly mounted on the buffer plate, a sliding groove is provided on the side wall of the buffer plate away from the third spring, a second clamping plate is slidably mounted in the sliding groove, a threaded rod extending to the outside is rotatably mounted on the side wall of the sliding groove, and the threaded rod is threadedly matched with the second clamping plate, and a fixing component matching with the buffer plate is provided on the mounting cavity.

5. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 4, characterized in that: The fixing assembly includes a second air pipe inserted into the mounting cavity, and the second air pipe is located above the mounting plate. Grooves are provided on the first handle and the second handle, a fixing rod is slidably installed in the groove, and a fourth spring is fixedly installed between the fixing rod and the groove. Fixing grooves are evenly provided on the buffer plate, and a third air pipe connected to the second air pipe is inserted on the side wall of the groove.

6. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 5, characterized in that: One end of the fixing rod close to the fixing groove is a conical surface.

7. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 1, characterized in that: The surface of the thin rod is a smooth mirror surface.

8. The instrument for fine reduction of metacarpal and phalangeal fractures according to claim 4, characterized in that: A positioner is embedded on the first clamping plate.

Images