Disposable prf membrane press cutting device

Abstract

The utility model discloses a disposable PRF film pressing cutting device, including the tubular body, the cover body of being fixedly connected with the upper end of tubular body through the connecting strip, and the cover body is equipped with the circular fixed ring of interference fit with the upper end of tubular body. The tubular body is equipped with pressing unit and direction limiting unit in. The upper pressing plate front end of pressing unit is fixedly connected cutting knife, and its connecting rod is equipped with reset spring, realizes the automatic reset of upper pressing plate, and the dynamic sealing assembly is established at the place of the tubular body of connecting rod and is prevented PRF pollution. The direction limiting unit is through the sliding fit of the lower pressing plate guide groove of pressing unit with the clamping strip, realizes the production and the taking out of PRF film. The device integrates the pressing and cutting function, and the cover body and the tubular body cooperate each other to effectively avoid PRF falling or pollution, reduce the sterilization time of operation platform, and the cutting knife can cut the PRF film that is pressed into the required specification, and the problem of sticking gauze scrap is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a disposable PRF membrane pressing and cutting device. Background Technology

[0002] In wound repair, platelet-rich fibrin (PRF) has been widely used for large-area trauma, wounds that are difficult to heal on their own, and diabetic foot wounds. Because it is prepared by centrifugation using the patient's own blood, immune rejection is avoided, and its bioactive molecules can promote wound cell proliferation and accelerate wound healing.

[0003] PRF obtained by centrifugation needs further compression, drainage, and cutting before use. Clinically, it is generally placed on sterile gauze and squeezed, then cut with a sterile blade. During this process, gauze fragments easily adhere, leading to rejection reactions in some patients. For patients with large-area wounds, PRF obtained by multi-tube centrifugation requires more time for compression and cutting, which not only increases the risk of PRF falling off or becoming contaminated due to improper handling, but also increases the time required for subsequent disinfection and cleaning of the operating table. Utility Model Content

[0004] The purpose of this invention is to provide a disposable PRF membrane pressing and cutting device, which can press the PRF membrane into a regular shape and cut it into a certain size according to the needs of the wound. It is convenient to use, avoids the PRF membrane from sticking to the gauze, and reduces the time required for subsequent cleaning and disinfection of the operating table.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a disposable PRF film pressing and cutting device, comprising a tube body and a cover body fixed to the upper end of the tube body by a connecting strip. The cover body is provided with a circular fixing ring that is interference-fitted with the upper end of the tube body so that the cover body can cover the tube body and fix it in place. The tube body is provided with a pressing unit for pressing the PRF film and a guiding and limiting unit for guiding and limiting. The pressing unit consists of a connecting rod that vertically penetrates the tube body, a finger pressure plate fixed to the top of the connecting rod outside the tube body, and a [missing information - likely a component or part] inside the tube body. The system consists of an upper pressure plate fixed to the bottom of the connecting rod and a retractable lower pressure plate; a cutter is fixed to the front end of the upper pressure plate; the guide and limiting unit is formed by a front baffle, a rear baffle, an upper baffle at the top, and right and left baffles on both sides; the front baffle has an opening for the lower pressure plate to be pulled out, and the upper edge of the opening forms the shearing mating surface of the cutter; the lower pressure plate is an I-shaped slider with guide grooves on both sides and a uniformly distributed grid of holes on the upper surface; the inner walls of the right and left baffles are fixed with retaining strips that slide in conjunction with the guide grooves of the lower pressure plate.

[0006] When the upper pressure plate compresses the PRF membrane, excess serum is drained through the mesh holes into the liquid storage space formed by the lower plate of the front baffle and the tube body. Placing the pressure plate on the outside of the tube body and covering the tube opening with the cap during PRF membrane compression reduces the risk of PRF membrane slippage and contamination.

[0007] Furthermore, a wedge-shaped opening block is fixed to the end of the cover away from the connecting strip, which facilitates opening the cover after the PRF film is made.

[0008] Furthermore, the mesh is an array of square holes with a side length of 3 mm to allow excess serum to drain from the PRF membrane.

[0009] Furthermore, the front end of the lower pressure plate has a recess with a depth of 1 / 4 of the plate thickness, which makes it convenient to use tools such as tweezers to pull the lower pressure plate out of the tube.

[0010] Furthermore, a return spring is fitted onto the connecting rod, with its two ends abutting against the lower surface of the upper baffle and the upper surface of the upper pressure plate, respectively. In its relaxed state, the return spring stretches the upper pressure plate to one side of the upper baffle, facilitating the placement of the centrifugally obtained PRF into the tube. Appropriate pressure is applied using a finger pressure plate to press the PRF to the required thickness. After releasing the finger pressure plate, the upper pressure plate, under the elastic force of the return spring, approaches the upper baffle, allowing the lower pressure plate to be easily pulled out of the tube.

[0011] Furthermore, a dynamic sealing assembly is provided at the point where the connecting rod penetrates the tube body, comprising an annular sealing gasket and a compression spring. The two ends of the compression spring abut against the upper baffle and the sealing gasket, respectively, and the compression spring constantly pushes the sealing gasket to maintain a tight seal against the inner wall of the tube. This ensures that during and after use, when the cover is closed, the contents of the tube do not leak out, minimizing contamination.

[0012] Furthermore, the tube body, cap, connecting strip, circular retaining ring, pressing unit, and guide limiting unit are made of medical-grade transparent plastic. The transparent plastic material allows for direct observation of the PRF membrane pressing thickness and the storage status of the permeated serum. Attached Figure Description

[0013] Figure 1 This is a front view of the present invention.

[0014] Figure 2 This is a side view of the present invention.

[0015] Figure 3 This is a top view of the lower pressure plate.

[0016] Figure 4 This is a side view of the upper pressure plate.

[0017] Figure 5 The side view connects the front fender, right fender, and rear fender.

[0018] In the diagram: 1. Tube body; 2. Cover body; 3. Pressing unit; 4. Guide and limiting unit; 5. Dynamic sealing assembly; 21. Wedge-shaped opening block; 22. Connecting strip; 23. Circular fixing ring; 31. Acupressure plate; 32. Connecting rod; 33. Return spring; 34. Upper pressure plate; 35. Cutter; 36. Lower pressure plate; 41. Right baffle; 42. Left baffle; 43. Upper baffle; 44. Front baffle; 45. Locking strip; 46. Rear baffle; 51. Annular sealing gasket; 52. Compression spring; 361. Mesh hole; 441. Opening. Detailed Implementation

[0019] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figure 1-5 As shown, a disposable PRF film pressing and cutting device includes a tube body 1 and a cover 2 fixed to the upper end of the tube body via a connecting strip 22. The cover 2 has a circular retaining ring 23 that is interference-fitted with the upper end of the tube body 1, ensuring that the cover 2 is fixed and does not fall off after covering the tube body 1, thus achieving a seal at the tube body 1 opening. The tube body 1 contains a pressing unit 3 for pressing the PRF film and a guide limiting unit 4 for guiding and limiting. The pressing unit 3 consists of a connecting rod 32 vertically penetrating the tube body, a finger pressure plate 31 fixed to the top of the connecting rod outside the tube body, an upper pressure plate 34 fixed to the bottom of the connecting rod inside the tube body, and a pull-out lower pressure plate 36. A cutter 35 is fixed to the front end of the upper pressure plate 34, allowing the PRF film to be cut to the required specifications during removal, avoiding the need for further cutting with a blade. The guide limiting unit 4... Unit 4 is formed by a front baffle 44, a rear baffle 46, an upper baffle 43 at the top, and right baffles 41 and left baffles 42 on both sides. The front baffle 44 has an opening 441 for the lower pressure plate 36 to be pulled out. The upper edge of the opening 441 forms the shearing mating surface of the cutter 35. The lower pressure plate 36 is an I-shaped slider with guide grooves on both sides and a uniformly distributed grid of holes 361 on its upper surface. The inner walls of the right baffle 41 and the left baffle 42 are fixed with retaining strips 45, which slide in conjunction with the guide grooves of the lower pressure plate 36.

[0021] In use, first place the PRF to be compressed obtained by centrifugation onto the lower pressure plate 36, then cover the tube opening 1 with the cap 2. Next, apply pressure to the finger pressure plate 31, and the connecting rod 32 will move the upper pressure plate 34 downwards along the left and right edges of the opening 441, compressing the PRF on the lower pressure plate 36. When the PRF is compressed to the required thickness, lift the finger pressure plate 31 upwards, open the cap 2, and pull the lower pressure plate 36 outwards along the retaining strip 45 to obtain the compressed PRF membrane. This avoids the possibility of gauze inclusion in the PRF membrane and ensures a regularly shaped PRF membrane. Compression within the tube avoids the risk of PRF membrane contamination and falling off. Through the mesh holes 361, excess serum during PRF membrane compression is ensured to permeate along the mesh holes into the storage space formed by the baffle below the front baffle 44 and the tube 1, preventing serum dripping.

[0022] Furthermore, a wedge-shaped opening block 21 is fixed to the end of the cover 2 away from the connecting strip 22, which can facilitate and quickly open the cover.

[0023] Furthermore, the mesh holes 361 are a square hole array with a side length of 3mm, ensuring that excess serum is discharged during the pressing process.

[0024] Furthermore, the front end of the lower pressure plate 36 is provided with a recess with a depth of 1 / 4 of the plate thickness, which makes it easy to pull the lower pressure plate 36 out of the tube body 1 along the retaining strip 45 after the PRF film is successfully pressed.

[0025] Furthermore, a return spring 33 is sleeved on the connecting rod 32. The two ends of the return spring 33 abut against the lower surface of the upper baffle 43 and the upper surface of the upper pressure plate 34, respectively. In the relaxed state, the return spring stretches the upper pressure plate 34 to one side of the upper baffle 43. When placing the PRF and pulling the lower pressure plate 36, the return spring can prevent the upper pressure plate 34 from being lifted manually.

[0026] Furthermore, a dynamic sealing component 5 is provided at the point where the connecting rod 32 passes through the tube body, including an annular sealing gasket 51 and a compression spring 52. The two ends of the compression spring 52 abut against the upper baffle 43 and the annular sealing gasket 51, respectively. The compression spring 52 always pushes the annular sealing gasket 51 to fit tightly against the inner wall of the tube body 1, ensuring that no material in the tube body 1 leaks out during the PRF membrane pressing process. After the device is used up, the cover 2 is closed, and the material in the tube body 1 will not leak out, protecting medical staff and reducing the contamination and cleaning time of the operating table.

[0027] Furthermore, the tube body 1, cap body 2, connecting strip 22, circular fixing ring 23, pressing unit 3, and guide limiting unit 4 are made of medical-grade transparent plastic. This facilitates the observation of PRF membrane pressing specifications and serum exudate.

[0028] The present invention has been described in detail above with reference to specific embodiments. However, the content described is only a preferred embodiment of the present invention and is not intended to limit the present invention. Equivalent substitutions or improvements made by those skilled in the art within the scope of the present invention's claims do not deviate from the essence of the corresponding technical solutions from the scope of the present invention.

Claims

1. A disposable PRF membrane pressing and cutting device, comprising a tube body (1) and a cover (2) fixed to the upper end of the tube body by a connecting strip (22), wherein the cover (2) is provided with a circular retaining ring (23) that is interference-fitted with the upper end of the tube body (1); characterized in that: The tube body (1) is provided with a pressing unit (3) for pressing the PRF film and a guide limiting unit (4) for guiding and limiting. The pressing unit (3) consists of a connecting rod (32) that penetrates the tube body vertically, a finger pressure plate (31) fixed to the top of the connecting rod outside the tube body, an upper pressure plate (34) fixed to the bottom of the connecting rod inside the tube body, and a pull-out lower pressure plate (36). A cutter (35) is fixed to the front end of the upper pressure plate (34). The guide limiting unit (4) consists of a front baffle (44), a rear baffle (46), and an upper pressure plate (35) at the top. The front baffle (44) is surrounded by a baffle (43) and two side baffles (41) and a left baffle (42). The front baffle (44) has an opening (441) for the lower pressure plate (36) to be pulled out. The upper edge of the opening (441) forms the shearing mating surface of the cutter (35). The lower pressure plate (36) is an I-shaped slider with guide grooves on both sides and a uniformly distributed grid hole (361) on the upper surface. The inner walls of the right baffle (41) and the left baffle (42) are fixed with a retaining strip (45) which slides in cooperation with the guide groove of the lower pressure plate (36).

2. The disposable PRF film pressing and cutting device according to claim 1, characterized in that, The end of the cover (2) away from the connecting strip (22) is fixed with a wedge-shaped opening block (21).

3. The disposable PRF film pressing and cutting device according to claim 1 or 2, characterized in that, The mesh holes (361) are a square hole array with a side length of 3mm.

4. The disposable PRF film pressing and cutting device according to claim 3, characterized in that, The front end of the lower pressure plate (36) has a recess with a depth of 1 / 4 of the plate thickness.

5. The disposable PRF film pressing and cutting device according to claim 1, characterized in that, The connecting rod (32) is fitted with a reset spring (33). The two ends of the reset spring (33) abut against the lower surface of the upper baffle (43) and the upper surface of the upper pressure plate (34) respectively. When the reset spring is in a relaxed state, it stretches the upper pressure plate (34) to one side of the upper baffle (43).

6. The disposable PRF film pressing and cutting device according to claim 1, characterized in that, The connecting rod (32) is provided with a dynamic sealing component (5) at the point where it passes through the pipe body. It includes an annular sealing gasket (51) and a compression spring (52). The two ends of the compression spring (52) abut against the upper baffle (43) and the annular sealing gasket (51) respectively. The compression spring (52) always pushes the annular sealing gasket (51) to fit tightly against the inner wall of the pipe body (1).

7. The disposable PRF film pressing and cutting device according to claim 1, characterized in that, The tube body (1), cover body (2), connecting strip (22), circular fixing ring (23), pressing unit (3) and guide limiting unit (4) are made of medical grade transparent plastic material.

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