Dental pulp stem cell collecting device

Abstract

The utility model provides a dental pulp stem cell collection device, and relates to the field of dental pulp stem cell collection. The dental pulp stem cell collecting device comprises a collecting tube and a cutting shaft arranged at one end of the collecting tube, and one end of the collecting tube is far away from the cutting shaft and is provided with an extraction assembly used for extracting dental pulp tissue. The extraction assembly comprises a needle tube inserted into the collection tube, a needle head detachably connected to one end of the needle tube, a pressing handle arranged at the end, away from the needle head, of the needle tube, a push rod movably connected into the collection tube and a first limiting plate fixedly connected to the outer side of the push rod, and the bottom of the first limiting plate is attached to the top of the collection tube; the bottom of the push rod is attached to the side, close to the needle tube, of the pressing handle. According to the dental pulp stem cell collecting device, the grinding head is easy to disassemble, clean or replace while being connected and operated, meanwhile, the needle tube used for extracting dental pulp tissue is also convenient to clean or replace, cleanliness and sanitation of the collecting device are guaranteed, the dental pulp tissue is prevented from being polluted, and the using effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of dental pulp stem cell collection, and specifically to a dental pulp stem cell collection device. Background Art

[0002] Dental pulp stem cells are a type of cell with high regenerative and differentiation potential. They are mainly found in the dental pulp tissue, which we call the dental pulp.

[0003] During pulp tissue collection, the dentist will use surgical instruments to carefully open the pulp chamber and remove the pulp tissue.

[0004] A Chinese patent discloses a dental pulp stem cell collection device, with the authorization announcement number CN215129165U. The patent includes a collection tube and a driving mechanism. The collection tube is fixedly installed with a collection mechanism on the right side, and the front of the collection mechanism is fixedly installed with an injection mechanism. The dental pulp stem cell collection device is powered by a lithium battery. Then, the motor switch is pressed down to start the motor. The motor drives the cutting shaft to rotate. The doctor holds the collection tube to cut the dental pulp tissue. Because the outer surface of the cutting shaft is smooth, the cutting shaft will grind out the dental pulp tissue and drop it into the collection box. The handle is pushed to the right. The handle drives the push rod to slide to the right inside the groove, so that the piston rod squeezes the piston to the right, and the mixed solution of collagenase and dispase in the syringe is sprayed from the needle and sprayed inside the collection box. After the mixed solution of collagenase and dispase soaks the dental pulp tissue for a period of time, a suspension of dental pulp stem cells is obtained, and the suspension is discharged from the liquid outlet. However, the cutting shaft for grinding out the pulp tissue and the collection box and collection tube for soaking the pulp tissue are an integral structure, and the cutting shaft is located inside the collection box, which makes it inconvenient and incomplete to clean the cutting shaft and the collection box after use. When the pulp tissue is placed inside the collection box for processing, the collection box that is not clean and hygienic enough easily contaminates the pulp tissue, resulting in poor use effect. Therefore, those skilled in the art provide a dental pulp stem cell collection device to solve the problems raised in the above background technology. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present application provides a dental pulp stem cell collection device, which solves the problems mentioned in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present application is implemented through the following technical solutions: a dental pulp stem cell collection device, comprising a collection tube and a cutting shaft arranged at one end of the collection tube, an extraction component is arranged at one end of the collection tube away from the cutting shaft, and the extraction component is used to extract dental pulp tissue;

[0009] The extraction assembly includes a needle tube inserted into the collection tube, a needle head detachably connected to one end of the needle tube, a handle arranged at the end of the needle tube away from the needle head, a push rod movably connected to the collection tube, and a first limiting plate fixedly connected to the outside of the push rod, the bottom of the first limiting plate fits with the top of the collection tube, and the bottom of the push rod fits with the side of the handle close to the needle tube.

[0010] By adopting the above technical solution, one side of the cutting shaft is used to grind out the pulp tissue, and the pulp can be easily extracted for collection under the action of the extraction component on the other side, which is more convenient and flexible to use. When the needle tube is movably inserted into the collection tube, the push rod is pulled downward so that the needle tube is inserted into the corresponding position inside the collection tube. The push rod falls to the side of the hand. The operator can use the finger to operate the push rod to pull the hand to move to complete the extraction of pulp tissue. The needle tube movably connected to the collection tube is easy to take out from the collection tube to carry out subsequent work on the collected pulp tissue, and it is also convenient to clean or replace the needle tube. In addition, the detachable needle head can also meet the replacement or disassembly cleaning work, which is conducive to ensuring the cleanliness and hygiene of the collection device, preventing the pulp tissue from being contaminated, and having a good use effect.

[0011] Preferably, a slot is provided on the side of the cutting shaft away from the collection tube, and a grinding head with one end set to a square structure is installed inside the slot, and a connecting component for fixing the grinding head is provided on the outside of the cutting shaft, and the connecting component includes two bayonet pins, two pressure blocks, a positioning ring plate, a fixing ring plate and two second limit plates, the two bayonet pins are symmetrically slidably connected to the inside of the cutting shaft, the ends of the two bayonet pins that are close to each other extend to the inside of the slot and fit the outside of the square structure, the ends of the two bayonet pins that are separated extend to the outside of the cutting shaft and are both set to inclined surfaces inclined toward one side of the collection tube, the outside of the cutting shaft and the inside of the fixing ring plate are provided with threads that cooperate with each other, the fixing ring plate is threadedly connected to the outside of the cutting shaft, the positioning ring plate is sleeved on the outside of the cutting shaft and is located between the bayonet pin and the fixing ring plate, the two pressure blocks are symmetrically fixedly connected to the side of the positioning ring plate close to the bayonet pin, and both fit the inclined surfaces of adjacent bayonet pins, and the two second limit plates are symmetrically slidably connected to the inside of the cutting shaft and both are fixedly connected to the outsides of adjacent bayonet pins.

[0012] By adopting the above technical scheme, the square structure of the grinding head is inserted into the inside of the slot, and the fixed circular ring plate is rotated to move it toward the side of the positioning circular ring plate. The moving fixed circular ring plate simultaneously drives the positioning circular ring plate to move toward the side of the bayonet pin, so as to drive the pressure block to fit with the outer side of the bayonet pin, so that the downward movement of the bayonet pin can be realized under the action of the inclined surface of the bayonet pin, and the connection work between the grinding head and the cutting shaft can be completed by fitting the moving bayonet pin with the outer side of the square structure. The grinding head can be used to grind out the pulp tissue under the rotation of the cutting shaft. The connection operation is simple, which is conducive to the disassembly, cleaning or replacement of the grinding head. It is flexible to use and ensures the hygiene of the device.

[0013] Preferably, two guide blocks are symmetrically fixedly connected to the inner side of the positioning annular plate, and two guide grooves used in conjunction with the guide blocks are symmetrically provided on the outer side of the cutting shaft. When the positioning annular plate moves, the guide blocks can be driven to slide in the guide grooves.

[0014] By adopting the above technical solution, when the positioning annular plate moves outside the cutting shaft, the guide block slides inside the guide groove to ensure the stability of the positioning annular plate, so that the pressure block is always located on one side of the bayonet.

[0015] Preferably, the adjacent ends of the two latches are both arranged as inclined surfaces inclined toward the outside of the slot.

[0016] By adopting the above technical solution, when the square end of the grinding head is inserted into the slot, the grinding head can push the upper latch to move upward under the action of the inclined surface.

[0017] Preferably, the outer side of the fixed annular plate and the outer side of the connecting end of the needle and the needle tube are both provided with anti-slip textures.

[0018] By adopting the above technical solution, the friction between the operator and the fixed circular ring plate or the needle connection end is increased, so as to better operate the fixed circular ring plate or the needle.

[0019] Preferably, the needle and the needle tube are plug-in connected.

[0020] By adopting the above technical solution, the disassembly and assembly work is more time-saving and simple, and the needle and the needle tube are transitionally matched and plugged in, so the connection is more stable.

[0021] Preferably, the needle and the needle tube are threadedly connected.

[0022] By adopting the above technical solution, the disassembly and assembly work is convenient and the connection is more stable, thereby ensuring the stability of the needle installation.

[0023] (III) Beneficial effects

[0024] The present application provides a dental pulp stem cell collection device, which has the following beneficial effects:

[0025] 1. In the dental pulp stem cell collection device, the grinding head can be used to collect dental pulp tissue under the driving action of the cutting shaft, and the grinding head is movably installed with the cutting shaft through a connecting component. The connection operation is simple and it is convenient to disassemble, clean or replace the grinding head. It is flexible to use and ensures the hygiene of the collection device.

[0026] 2. The dental pulp stem cell collection device is provided with a needle tube for extracting the ground dental pulp tissue, and the needle tube is movably inserted in the collection tube, which is convenient for taking out from the collection tube to carry out subsequent work on the collected dental pulp tissue. It is also convenient for cleaning or replacing the needle tube, which is beneficial to ensure the cleanliness and hygiene of the collection device, prevent the dental pulp tissue from being contaminated, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the first overall structure of this application.

[0028] Figure 2 This is a second overall structural diagram of the present application.

[0029] Figure 3 This is a schematic diagram of the connection component structure illustrated in this application.

[0030] Figure 4 This is a schematic diagram of the split structure of the connection component illustrated in this application.

[0031] Figure 5 This is a schematic diagram of the cross-sectional structure of the cutting shaft illustrated in this application.

[0032] Figure 6 This is a schematic diagram of the partial cross-sectional structure inside the collection tube illustrated in this application.

[0033] In the figure: 1. Collection tube; 2. Cutting axis; 3. Fixed annular plate; 4. Positioning annular plate; 5. Pin; 6. Grinding head; 7. Press block; 8. Guide block; 9. Slot; 10. First limit plate; 11. Guide groove; 12. Second limit plate; 13. Needle tube; 14. Needle; 15. Press hand; 16. Push rod. DETAILED DESCRIPTION

[0034] The present application is further described in detail below through drawings and examples.

[0035] Reference Figure 1 , Figure 2 and Figure 6The embodiment of the present application provides a dental pulp stem cell collection device, comprising a collection tube 1 and a cutting shaft 2 arranged at one end of the collection tube 1, one end of the collection tube 1 is away from the cutting shaft 2, and is provided with an extraction component for extracting dental pulp tissue, the extraction component comprising a needle tube 13 inserted into the collection tube 1, a needle head 14 detachably connected to one end of the needle tube 13, a hand 15 arranged at one end of the needle tube 13 away from the needle head 14, a push rod 16 movably connected to the collection tube 1, and a first limiting plate 10 fixedly connected to the outside of the push rod 16, the bottom of the first limiting plate 10 is in contact with the top of the collection tube 1, and the bottom of the push rod 16 is in contact with a side of the hand 15 close to the needle tube 13;

[0036] Specifically, one side of the cutting shaft 2 is used to grind out the pulp tissue, and the pulp can be easily extracted for collection under the action of the extraction component on the other side, which is more convenient and flexible to use. When the needle tube 13 is movably inserted into the collection tube 1, the push rod 16 is pulled downward so that the needle tube 13 is inserted into the corresponding position inside the collection tube 1. The push rod 16 falls to one side of the hand 15. The operator can use the finger to operate the push rod 16 to pull the hand 15 to move to complete the extraction of the pulp tissue. The needle tube 13 movably connected to the collection tube 1 is easy to take out from the collection tube 1 to perform subsequent work on the collected pulp tissue, and is conducive to the cleaning or replacement of the needle tube 13. In addition, the detachable needle head 14 can also meet the replacement or disassembly cleaning work, which is conducive to ensuring the cleanliness and hygiene of the collection device, preventing the pulp tissue from being contaminated, and having a good use effect.

[0037] Reference Figure 1 - Figure 5 , a slot 9 is provided on the side of the cutting shaft 2 away from the collection tube 1, and a grinding head 6 with a square structure at one end is installed inside. A connecting assembly is provided on the outside of the cutting shaft 2 for fixing the grinding head 6, including two bayonet pins 5, two pressure blocks 7, a positioning annular plate 4, a fixed annular plate 3 and two second limit plates 12. The two bayonet pins 5 are symmetrically slidably connected to the inside of the cutting shaft 2, and the ends close to each other extend to the inside of the slot 9 and fit the outside of the square structure, and the ends away from each other extend to the outside of the cutting shaft 2, and are arranged as an inclined surface inclined to one side of the collection tube 1. The outside of the cutting shaft 2 and the inner side of the fixed annular plate 3 are provided with mutually matching threads, and the fixed annular plate 3 is threadedly connected to the outside of the cutting shaft 2. The positioning annular plate 4 is sleeved on the outside of the cutting shaft 2, located between the bayonet pin 5 and the fixed annular plate 3. The two pressure blocks 7 are symmetrically fixedly connected to the side of the positioning annular plate 4 close to the bayonet pin 5, and fit with the inclined surface of the adjacent bayonet pin 5. The two second limit plates 12 are symmetrically slidably connected to the inside of the cutting shaft 2 and fixedly connected to the outside of the adjacent bayonet pin 5.

[0038] Specifically, the square structure of the grinding head 6 is inserted into the inside of the slot 9, and the fixed annular plate 3 is rotated to move toward the side of the positioning annular plate 4. The moving fixed annular plate 3 simultaneously drives the positioning annular plate 4 to move toward the side of the bayonet 5, so as to drive the pressure block 7 to fit with the outer side of the bayonet 5, so that the downward movement operation of the bayonet 5 can be realized under the action of the inclined surface of the bayonet 5, and the connection work between the grinding head 6 and the cutting shaft 2 can be completed by fitting the moving bayonet 5 with the outer side of the square structure. The grinding head 6 can be used to grind out the pulp tissue under the rotation of the cutting shaft 2. The connection operation is simple, which is conducive to the disassembly, cleaning or replacement of the grinding head 6. It is flexible to use and ensures the hygiene of the device.

[0039] Reference Figure 3 and Figure 4 Two guide blocks 8 are symmetrically fixedly connected to the inner side of the positioning circular ring plate 4, and two guide grooves 11 are provided on the outer side of the cutting shaft 2 for use with the guide blocks 8. When the positioning circular ring plate 4 moves, the guide blocks 8 can be driven to slide inside the guide grooves 11. The sliding of the guide blocks 8 inside the guide grooves 11 can ensure the stability of the positioning circular ring plate 4, so that the pressure block 7 is always located on one side of the bayonet 5.

[0040] Reference Figure 5 The adjacent ends of the two latches 5 are set as an inclined surface inclined toward the outside of the slot 9. When the square end of the grinding head 6 is inserted into the slot 9, the grinding head 6 can push the upper latch 5 to move upward under the action of the inclined surface, making it convenient for the grinding head 6 to be inserted into the slot 9.

[0041] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 The outer side of the fixed annular plate 3 and the outer side of the connecting end of the needle 14 and the needle tube 13 are provided with anti-slip textures, and the anti-slip textures are used to increase the friction between the operator and the fixed annular plate 3 or the connecting end of the needle 14, so as to better operate the fixed annular plate 3 or the needle 14.

[0042] The needle 14 and the needle tube 13 can be connected by plug-in connection, which saves time and is simple to disassemble and assemble. In addition, the needle 14 and the needle tube 13 are plugged in with transition fit, which can enhance the stability of the connection.

[0043] The needle 14 and the needle tube 13 can be connected by threaded connection, which makes the connection more stable and ensures the stability of the installation of the needle 14.

[0044] Working principle:

[0045] First, insert the square structure of the grinding head 6 into the inside of the slot 9, rotate the fixed annular plate 3 to move it toward the side of the positioning annular plate 4, and the moving fixed annular plate 3 simultaneously drives the positioning annular plate 4 to move toward the side of the bayonet 5, so as to drive the pressure block 7 to fit with the outer side of the bayonet 5, so that the bayonet 5 can be moved downward under the action of the inclined surface of the bayonet 5, and the connection work between the grinding head 6 and the cutting shaft 2 can be completed by fitting the moving bayonet 5 with the outer side of the square structure. The grinding head 6 can be used to grind out the pulp tissue under the rotation of the cutting shaft 2. The connection operation is simple, which is conducive to the disassembly, cleaning or replacement of the grinding head 6. It is flexible to use and ensures the hygiene of the device.

[0046] After the pulp tissue is ground out, the collection tube 1 is turned over, and the operator can use the finger to operate the push rod 16 to pull the handle 15 to move to complete the extraction of the pulp tissue. At the same time, the needle tube 13 movably connected to the collection tube 1 is convenient to be taken out from the collection tube 1 to perform subsequent work on the collected pulp tissue, and is conducive to cleaning or replacing the needle tube 13. In addition, the detachable needle head 14 can also meet the replacement or disassembly cleaning work, which is conducive to ensuring the cleanliness and hygiene of the collection device, preventing the pulp tissue from being contaminated, and having a good use effect.

[0047] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A dental pulp stem cell collection device, comprising a collection tube (1) and a cutting shaft (2) arranged at one end of the collection tube (1), characterized in that: An extraction component is provided at one end of the collection tube (1) away from the cutting axis (2), and the extraction component is used to extract dental pulp tissue; The extraction assembly comprises a needle tube (13) inserted into the collection tube (1), a needle head (14) detachably connected to one end of the needle tube (13), a handle (15) arranged at the end of the needle tube (13) away from the needle head (14), a push rod (16) movably connected to the collection tube (1) and a first limiting plate (10) fixedly connected to the outside of the push rod (16), the bottom of the first limiting plate (10) is in contact with the top of the collection tube (1), and the bottom of the push rod (16) is in contact with a side of the handle (15) close to the needle tube (13).

2. A dental pulp stem cell collection device according to claim 1, characterized in that: A slot (9) is provided on the side of the cutting shaft (2) away from the collection tube (1), a grinding head (6) having one end arranged in a square structure is arranged inside the slot (9), a connecting assembly for fixing the grinding head (6) is arranged on the outside of the cutting shaft (2), the connecting assembly comprises two bayonet pins (5), two pressure blocks (7), a positioning annular plate (4), a fixing annular plate (3) and two second limit plates (12), the two bayonet pins (5) are symmetrically slidably connected inside the cutting shaft (2), the adjacent ends of the two bayonet pins (5) are both extended to the inside of the slot (9) and fit with the outer side of the square structure, and the separated ends of the two bayonet pins (5) are both extended to the cutting shaft (2) The outer side of the cutting shaft (2) and the inner side of the fixed annular plate (3) are both provided with inclined surfaces inclined toward one side of the collection tube (1); the outer side of the cutting shaft (2) and the inner side of the fixed annular plate (3) are provided with threads for mutual use; the fixed annular plate (3) is threadedly connected to the outer side of the cutting shaft (2); the positioning annular plate (4) is sleeved on the outer side of the cutting shaft (2) and is located between the bayonet pin (5) and the fixed annular plate (3); the two pressing blocks (7) are symmetrically fixedly connected to the side of the positioning annular plate (4) close to the bayonet pin (5) and are both fitted with the inclined surfaces of adjacent bayonet pins (5); the two second limiting plates (12) are symmetrically slidably connected to the inside of the cutting shaft (2) and are both fixedly connected to the outer sides of adjacent bayonet pins (5).

3. A dental pulp stem cell collection device according to claim 2, characterized in that: Two guide blocks (8) are symmetrically fixedly connected to the inner side of the positioning annular plate (4), and two guide grooves (11) for use with the guide blocks (8) are symmetrically arranged on the outer side of the cutting shaft (2). When the positioning annular plate (4) moves, it can drive the guide blocks (8) to slide inside the guide grooves (11).

4. The dental pulp stem cell collection device according to claim 3, characterized in that: The adjacent ends of the two latches (5) are both arranged as inclined surfaces inclined toward the outside of the slot (9).

5. The dental pulp stem cell collection device according to claim 4, characterized in that: The outer side of the fixed annular plate (3) and the outer side of the connecting end of the needle head (14) and the needle tube (13) are both provided with anti-slip textures.

6. The dental pulp stem cell collection device according to claim 1, characterized in that: The needle (14) and the needle tube (13) are plug-in connected.

7. The dental pulp stem cell collection device according to claim 1, characterized in that: The needle (14) and the needle tube (13) are threadedly connected.

Images