A plasma substrate film shearing device

Abstract

The utility model discloses a plasma matrix membrane shearing device belongs to medical instrument technical field. A plasma matrix membrane shearing device, including a pair of knife handle, a pair of fixed column is installed on the knife handle respectively, the both ends of fixed column are installed with the connecting seat respectively, install the pin rod between a pair of connecting seat, install a plurality of scissors head on the pin rod, a plurality of placing groove are equipped on the scissors head respectively, the most outside two scissors head are equipped with positioning piece respectively, a plurality of fixed seat are equipped on the scissors head respectively, install the adjusting rod in fixed seat, install the adjusting piece that carries out position adjustment to fixed seat on the adjusting rod. The plasma matrix membrane shearing device of the utility model installs multiple scissors head on the pin rod, can carry out shearing operation simultaneously to improve production efficiency, at the same time, the distance between the scissors head of the device can be adjusted flexibly, and through positioning piece, ensure that plasma matrix membrane does not slip or shift in the shearing process.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a plasma matrix membrane shearing device. Background Technology

[0002] In the medical field, bone grafting surgery is a common treatment method that plays an important role in repairing bone defects and promoting bone healing. However, traditional autologous bone grafting has significant limitations, mainly manifested in large intraoperative trauma and relatively serious postoperative complications, which undoubtedly increases patient suffering and the difficulty of rehabilitation. To overcome these shortcomings, researchers are committed to developing novel autologous bone substitute materials, aiming to reduce patient suffering while ensuring treatment effectiveness.

[0003] Plasma matrix bone blocks, as an emerging autologous bone substitute, have attracted widespread attention due to their good biocompatibility and osteoinductive properties. They can, to some extent, replace autologous bone in patients, providing a new solution for bone repair. However, the preparation of plasma matrix bone blocks requires cutting the plasma matrix membrane into fragments of a certain size for subsequent processing and use.

[0004] Currently, traditional methods for fragmenting plasma matrix membranes primarily rely on manual operation using wire shears. However, this method has significant drawbacks. First, the shearing efficiency of wire shears is low, failing to meet the demands of large-scale production. Second, due to the limitations of manual operation, the size of the fragments produced varies, which not only affects the efficiency of plasma matrix bone block preparation but may also lead to inconsistent quality of the final product. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a plasma matrix membrane shearing device.

[0006] To achieve the above objectives, the present invention proposes the following technical solution: a plasma matrix membrane shearing device, comprising a pair of blade handles, a fixing post mounted on each of the pair of blade handles, a connecting seat mounted on each end of the fixing post, a pin mounted between the pair of connecting seats, a plurality of scissor heads mounted on the pin, each of the plurality of scissor heads having a placement groove, a positioning element mounted on the two outermost scissor heads, a fixing seat mounted on each of the plurality of scissor heads, an adjusting rod mounted inside the fixing seat, and an adjusting element mounted on the adjusting rod for adjusting the position of the fixing seat.

[0007] By adopting the above technical solution, the device provides a stable operating foundation through the design of a pair of blade handles and a fixed column; multiple scissor heads mounted on the pin can perform cutting operations simultaneously, significantly improving cutting efficiency; the positioning component and placement groove ensure that the plasma matrix membrane does not slip during the cutting process; the design of the fixed seat and adjusting rod allows the spacing between the scissor heads to be flexibly adjusted to adapt to the cutting needs of plasma matrix membrane fragments of different sizes, enhancing the versatility and practicality of the device.

[0008] Optionally, the scissor head includes an upper blade and a lower blade. The upper blade is connected to the lower blade via a pivot. The upper blade and the lower blade are respectively provided with connecting holes at one end near the handle. The connecting holes are connected to the pin.

[0009] By adopting the above technical solution, the scissor head is designed with an upper blade and a lower blade connected by a rotating shaft, which allows the scissor head to open and close flexibly to achieve the cutting function. The connection method between the connecting hole and the pin ensures the stable installation and rotation of the scissor head, making it convenient for operators to perform cutting operations on the plasma matrix membrane.

[0010] Optionally, the positioning element includes positioning teeth mounted on the upper blade, the positioning teeth corresponding to the position of the placement groove.

[0011] By adopting the above technical solution, the docking design of the positioning teeth and the placement groove effectively prevents the plasma matrix membrane from slipping or shifting during the shearing process, ensuring the accuracy and stability of the shearing operation.

[0012] Optionally, several of the fixed seats are provided with through holes, and the inner sidewall of the through holes is provided with a mating groove for connecting with the adjusting member.

[0013] By adopting the above technical solution, the design of the perforation and the docking groove provides a stable structural foundation for the connection between the adjusting component and the fixed seat. The docking groove enables the adjusting component to limit and fix the fixed seat, thereby realizing the control of the scissor head spacing. This design not only improves the convenience of adjustment, but also enhances the overall stability and durability of the device.

[0014] Optionally, the adjusting member includes a mounting groove formed on the adjusting rod, a rotating rod provided in the mounting groove, a cam provided on the outer periphery of the rotating rod, a limiting strip provided in the mounting groove that fits against the cam, and a fastening nut installed at one end of the rotating rod that passes through and extends to the outside of the mounting groove.

[0015] By adopting the above technical solution, the adjusting component achieves the adjustment of the position of the fixed seat through the ingenious combination of the rotating rod and the cam. By rotating the rotating rod, the lowest point of the cam is in contact with the limiting strip, releasing the limitation of the fixed seat. The spacing between the scissor heads is adjusted by the fixed seat. After the adjustment is completed, the rotating rod is rotated so that the highest point of the cam is in contact with the limiting strip. The cam lifts the limiting strip and fits tightly with the mating groove. After the fit is made, the fastening nut is rotated to fix the position of the fixed seat.

[0016] Optionally, a pair of abutment seats are provided inside the mounting groove, and a return spring is provided between the pair of abutment seats and the limiting strip.

[0017] By adopting the above technical solution, the design of the reset spring can help the limiting bar to quickly reset when the fixed seat is released, thus maintaining the initial state of the device and preparing for the adjustment of the scissor head.

[0018] Optionally, a rubber pad is installed on the side of the limiting strip near the fixing seat.

[0019] By adopting the above technical solution, the installation of the rubber pad increases the friction between the limiting strip and the fixed seat, further preventing slippage or displacement during the adjustment process.

[0020] Optionally, the connecting seat is connected to the fixing post and the pin respectively by fastening bolts.

[0021] By adopting the above technical solution, the design of the fastening bolts allows the connecting seat to be firmly installed on the fixed column and pin, ensuring the stability and reliability of the entire device. This connection method not only facilitates disassembly and assembly but also makes maintenance and component replacement convenient.

[0022] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model's plasma matrix membrane shearing device, by mounting multiple shear heads on a pin, enables simultaneous shearing operations. The simultaneous operation of multiple shear heads, much like multiple scissors cutting at the same time, significantly increases the shearing speed of the plasma matrix membrane, thereby improving production efficiency. Furthermore, the spacing between the shear heads can be flexibly adjusted, and positioning components and placement grooves ensure that the plasma matrix membrane does not slip or shift during the shearing process. This design results in more uniformly sized plasma matrix membrane fragments, guaranteeing the quality stability of plasma matrix bone block preparation.

[0023] 2. The design of the fixed base and adjusting rod allows the spacing between the shear heads to be flexibly adjusted according to the needs of different sizes of plasma matrix membrane fragments; this means that the device can adapt to the shearing needs of various specifications of plasma matrix membranes without the need to change different shearing devices for different sizes of plasma matrix membrane fragments, greatly enhancing the versatility and practicality of the device, enabling it to play a good shearing role in different production scenarios and material specifications.

[0024] 3. The design of the adjusting components, including the combination of the rotating rod, cam, and limiting bar, makes adjusting the gap between the scissor heads simple and convenient; at the same time, the fixing of the fastening nut ensures the stability after adjustment and prevents loosening or displacement during use.

[0025] 4. The connecting seat is connected to the fixed column and pin respectively by fastening bolts. This connection method is not only strong and reliable, but also facilitates disassembly and assembly. When the device needs maintenance or component replacement, operators can easily disassemble and install the relevant components, improving maintenance efficiency and reducing maintenance costs. Attached Figure Description

[0026] Figure 1 This is a front view structural diagram of the shearing device of this utility model; Figure 2 This is a top view of the shearing device of this utility model; Figure 3 This is a schematic diagram of the three-dimensional connection structure between the tool holder and the pin of this utility model; Figure 4 This is a schematic diagram of the connection structure between the upper blade and the positioning component of this utility model; Figure 5 This is a schematic diagram of the connection structure between the lower blade and the positioning component of this utility model; Figure 6 This is a side view cross-sectional diagram of the adjusting rod of this utility model; Figure 7 This is a front view cross-sectional diagram of the adjusting rod of this utility model.

[0027] In the diagram: 1. Handle; 2. Fixing post; 3. Connecting seat; 301. Fastening bolt; 4. Pin; 5. Scissor head; 51. Upper blade; 52. Lower blade; 53. Rotating shaft; 54. Connecting hole; 6. Positioning component; 61. Positioning tooth; 62. Placement slot; 7. Fixing seat; 701. Through hole; 702. Connecting slot; 8. Adjusting rod; 9. Adjusting component; 91. Mounting slot; 911. Abutment seat; 912. Return spring; 92. Rotating rod; 93. Cam; 94. Limiting strip; 941. Rubber pad; 95. Fastening nut. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figure 1-7 As shown, the specific solution of the embodiment is as follows: A plasma matrix membrane shearing device includes a pair of handles 1. The handles 1 are the part held by the operator, providing the operator with a stable grip point to facilitate the operator to perform shearing operations. Fixed posts 2 are respectively installed on the pair of handles 1. The fixed posts 2 play a connecting and supporting role. They connect the handles 1 to the connecting seat 3, providing a stable structural foundation for the entire shearing device. This design enables the operator to stably control the movement of the shearing device, ensuring the accuracy and stability of the shearing operation. Connecting seats 3 are installed at both ends of the fixed column 2. The connecting seats 3 are connected to the fixed column 2 and the pin 4 respectively by fastening bolts 301. The connecting seats 3 are used to connect the fixed column 2 and the pin 4. The connection method of fastening bolts 301 ensures that the connecting seats 3 are firmly fixed to the fixed column 2 and the pin 4, ensuring the stability and reliability of the entire device. This connection method facilitates disassembly and assembly, and makes it convenient for maintenance and replacement of parts, thus improving the maintainability of the device.

[0031] A pin 4 is installed between the connecting seats 3. The pin 4 is used to install the scissor heads 5. By controlling the pin 4, multiple scissor heads 5 can be controlled simultaneously to perform cutting operations, greatly improving cutting efficiency. Several scissor heads 5 are installed on a pair of pins 4. Each scissor head 5 includes an upper blade 51 and a lower blade 52. The upper blade 51 is connected to the lower blade 52 through a rotating shaft 53. The design of the rotating shaft 53 allows the scissor heads 5 to open and close flexibly to achieve the cutting function. The upper blade 51 and the lower blade 52 are respectively provided with connecting holes 54 at the ends near the handle 1. The connecting holes 54 are connected to the pin 4. The ends of the upper blade 51 and the lower blade 52 away from the handle 1 are bent inward. The inward bending design of the blades causes the sharp edges of the blades to shrink inward, making it less likely for the user's fingers or other parts to come into contact with the sharp parts of the blades when handling the device, effectively reducing the risk of accidental cuts. Each of the aforementioned scissor heads 5 is provided with a placement groove 62, which is respectively opened on the aforementioned lower blades 52. The two outermost scissor heads 5 are respectively provided with positioning elements 6, which include positioning teeth 61 installed on the upper blade 51. The positioning teeth 61 correspond to the positions of the placement grooves 62. The docking design of the positioning teeth 61 and the placement grooves 62 effectively prevents the plasma matrix membrane from slipping or shifting during the shearing process, ensuring the accuracy and stability of the shearing operation and improving the shearing quality. By disassembling the middle scissor head 5, the distance between the two outermost scissor heads 5 can be adjusted. By adjusting the distance, plasma matrix membranes of different specifications can be positioned.

[0032] Each of the scissor heads 5 is provided with a fixing seat 7, which is installed on the upper end of the upper blade 51. Each of the fixing seats 7 is provided with a through hole 701. The inner side wall of the through hole 701 is provided with a docking groove 702 that connects to the adjusting member 9. An adjusting rod 8 is installed in the fixing seat 7. The design of the fixing seat 7 and the adjusting rod 8 allows the spacing between the scissor heads 5 to be flexibly adjusted to meet the shearing requirements of plasma matrix membrane fragments of different sizes, thereby enhancing the versatility and practicality of the device. An adjusting member 9 for adjusting the position of the fixed seat 7 is installed on the adjusting rod 8. The adjusting member 9 includes a mounting groove 91 formed on the adjusting rod 8, a rotating rod 92 disposed in the mounting groove 91, a cam 93 disposed on the outer periphery of the rotating rod 92, the cam 93 being located in the middle of the mounting groove 91, a limiting strip 94 disposed in the mounting groove 91 to fit against the cam 93, and a pair of abutment seats 911 disposed on the inner side of the mounting groove 91. A return spring 912 is disposed between the pair of abutment seats 911 and the limiting strip 94, respectively. The return spring 912 can help the limiting strip 94 to quickly return to its original position when the fixed seat 7 is released, by means of the spring force. In the initial state of the device, preparations are made for the adjustment of the spacing between the scissor heads 5. A rubber pad 941 is installed on the side of the limiting strip 94 near the fixed base 7. The installation of the rubber pad 941 increases the friction between the limiting strip 94 and the fixed base 7, further preventing the scissor heads 5 from sliding or shifting during use. A fastening nut 95 is installed at one end of the rotating rod 92 that passes through and extends to the outside of the mounting groove 91. The design of the fastening nut 95 can limit and fix the rotated rod 92. A handle is installed at the end of the rotating rod 92 near the fastening nut 95. The diameter of the handle and the fastening nut 95 is smaller than the diameter of the through hole 701. By rotating the lever 92, the lowest point of the cam 93 engages with the limiting strip 94, releasing the constraint of the fixing seat 7. The spacing between the scissor heads 5 can then be adjusted via the fixing seat 7. After adjustment, rotating the lever 92 causes the highest point of the cam 93 to engage with the limiting strip 94. The cam 93 then lifts the limiting strip 94, ensuring it fits tightly against the mating groove 702. Once engaged, rotating the fastening nut 95 fixes the position of the fixing seat 7. This design allows for flexible adjustment of the spacing between the scissor heads 5, improving the ease of adjustment.

[0033] The working principle of the above embodiments is as follows: Prepare the plasma matrix membrane to be cut, and determine the spacing between the scissor heads 5 according to the specifications of the plasma matrix membrane and the required fragment size; Manually rotate the fastening nut 95 to loosen it, and then rotate the lever 92 by the throttle to make the lowest point of the cam 93 fit with the limiting bar 94, thereby releasing the constraint of the fixed seat 7. By moving the fixed seat 7 on the adjusting rod 8, adjust the spacing between the scissor heads 5 to meet the required cutting size. After adjusting the spacing of the shear heads 5, rotate the lever 92 by turning the handle to make the highest point of the cam 93 fit against the limiting strip 94. The cam 93 then lifts the limiting strip 94 and makes it fit tightly against the mating groove 702. Then, rotate the fastening nut 95 to fix the position of the fixing seat 7 to ensure that the spacing of the shear heads 5 remains stable during the shearing process. Place the plasma matrix membrane between the positioning parts 6 of the two outermost scissor heads 5, ensuring that the edge of the plasma matrix membrane corresponds to the position of the positioning teeth 61 and the placement groove 62; if the size of the plasma matrix membrane is small, the distance between the two outermost scissor heads 5 can be further adjusted by removing the middle scissor head 5 to better position the plasma matrix membrane. After adjustment, reinstall the scissor heads 5 and fix them. By operating the handle 1, the upper blade 51 and lower blade 52 of the scissor head 5 are opened and closed to cut the plasma matrix membrane. Since multiple scissor heads 5 are installed on the pin 4, the cutting operation can be performed simultaneously, improving the cutting efficiency. During the cutting process, the positioning teeth 61 and the placement groove 62 will prevent the plasma matrix membrane from slipping or shifting, ensuring the accuracy and stability of the cutting operation. The above shearing operation can be repeated as needed to cut the plasma matrix membrane into the desired fragment size.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plasma matrix membrane shearing device, characterized in that, The device includes a pair of handles, each with a fixed post. Connecting seats are mounted at both ends of each fixed post. A pin is installed between the pair of connecting seats. A plurality of scissor heads are mounted on the pin. Each of the scissor heads has a placement groove. The two outermost scissor heads each have a positioning element. Each of the scissor heads has a fixed seat. An adjusting rod is installed inside each fixed seat, and an adjusting element for adjusting the position of the fixed seat is mounted on the adjusting rod.

2. The plasma matrix membrane shearing device according to claim 1, characterized in that: The scissor head includes an upper blade and a lower blade. The upper blade is connected to the lower blade via a pivot. The upper blade and the lower blade are respectively provided with connecting holes at one end near the handle, and the connecting holes are connected to the pin.

3. The plasma matrix membrane shearing device according to claim 2, characterized in that: The positioning element includes positioning teeth mounted on the upper blade, and the positioning teeth correspond to the position of the placement groove.

4. The plasma matrix membrane shearing device according to claim 1, characterized in that: Several of the fixed seats are provided with through holes, and the inner sidewall of the through holes is provided with a mating groove for connecting with the adjusting member.

5. A plasma matrix membrane shearing device according to claim 1, characterized in that: The adjusting component includes a mounting groove formed on the adjusting rod, a rotating rod provided in the mounting groove, a cam provided on the outer periphery of the rotating rod, a limiting strip provided in the mounting groove that fits against the cam, and a fastening nut installed at one end of the rotating rod that passes through and extends to the outside of the mounting groove.

6. A plasma matrix membrane shearing device according to claim 5, characterized in that: A pair of abutment seats are provided inside the mounting groove, and a return spring is provided between the pair of abutment seats and the limiting strip.

7. A plasma matrix membrane shearing device according to claim 5, characterized in that: A rubber pad is installed on the side of the limiting strip closest to the fixing seat.

8. A plasma matrix membrane shearing device according to claim 1, characterized in that: The connecting seat is connected to the fixing column and the pin respectively by fastening bolts.

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