Orthopedic scraper head and reciprocating scraper

Abstract

The utility model relates to the technical field of medical instruments, and discloses an orthopaedic scraper head and a reciprocating scraper, the scraper head comprises a base body, one end of the base body is provided with a connecting part, and the other end of the base body is provided with a bone scraping part; a chip removal hole is formed in the middle of the bone scraping part, a first cutting edge is arranged on the edge, far away from the connecting part, of the chip removal hole in the bone scraping part, a second cutting edge is arranged on at least one edge of the two axial sides of the chip removal hole in the bone scraping part, and the first cutting edge and the second cutting edge are arranged on the same side of the bone scraping part; the reciprocating scraper comprises a shell, a supporting rod assembly, a reciprocating mechanism, an interface assembly and the scraper head. The utility model solves the problems that the bone scraping process is more labor-consuming and lower in efficiency because the bone tissues on the two sides need to be torn off forcefully when the knife head of the scraper is cut into the bone tissues in the scraping process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an orthopedic scraper head and a reciprocating scraper. Background Technology

[0002] In orthopedic surgery, it is often necessary to remove cartilage, endplates, and cancellous bone; currently, the main tool used for this removal is the orthopedic curette.

[0003] The applicant's patent with authorization announcement number CN221814104U discloses a cartilage scraper, including a scraper assembly, a support tube assembly, and a connecting assembly. The connecting assembly is provided with a drive mechanism that drives the scraper assembly to reciprocate along the axial direction. The support tube assembly includes a transmission shaft with one end connected to the drive mechanism and a bent section at the other end. The scraper assembly includes a fixed sleeve connected to the bent section and a scraper that is fitted into the fixed sleeve. The scraper is a frame-shaped structure with a hollow center and a scraper blade on one side of the frame-shaped structure.

[0004] The aforementioned scraper improves surgical quality and efficiency; however, it has the following problems: the scraper head only has a cutting edge at the front end. When the scraper head cuts into the bone tissue, force is required to tear the bone tissue on both sides during the scraping process, which makes the scraping process laborious and inefficient. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an orthopedic scraper head and a reciprocating scraper to solve the problem that when the scraper head cuts into the bone tissue, it is necessary to use force to tear the bone tissue on both sides during the scraping process, which makes the scraping process laborious and inefficient.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] In a first aspect, this utility model discloses an orthopedic scraper head, including a base, one end of which is provided with a connecting part, and the other end of which is provided with a scraping part; the scraping part is provided with a shaving hole in the middle, and a first cutting edge is provided on the scraping part away from the edge of the shaving hole away from the connecting part, and a second cutting edge is provided on at least one edge on both sides of the shaving hole on the scraping part along the axial direction, and the first cutting edge and the second cutting edge are provided on the same side of the scraping part.

[0008] Furthermore, the same side of the scraping portion and the base is an inwardly concave arc-shaped transition surface, located on one side of the first and second cutting edges. This design avoids interference with the lesion site during scraping surgery, resulting in better scraping treatment.

[0009] Furthermore, the base, connecting part, and scraping part are an integral structure. This design facilitates the processing and production of the scraper head.

[0010] Furthermore, the height of the first cutting edge is greater than the height of the second cutting edge. This design makes it easier to insert the scraper tip into bone tissue.

[0011] Furthermore, the side of the first cutting edge away from the connecting part is beveled. This design can reduce interference during use.

[0012] Secondly, this utility model also discloses a reciprocating scraper, including a housing, a support rod assembly, a reciprocating mechanism, an interface assembly, and the aforementioned scraper head. The reciprocating mechanism and interface assembly are both housed within the housing. The support rod assembly includes a drive shaft, one end of which is fixedly connected to a connecting part, and the other end of which is fixedly connected to a drive shaft. The end of the drive shaft furthest from the drive shaft is connected to the reciprocating mechanism. The interface assembly includes an input shaft, one end of which is provided with a motor interface, and the other end of which is eccentrically provided with an eccentric shaft connected to the reciprocating mechanism. This configuration allows for the connection of an external motor via the motor interface. The motor drives the eccentric shaft to rotate eccentrically, thereby causing the drive shaft and transmission shaft to reciprocate axially through the reciprocating mechanism, which in turn drives the scraper head to reciprocate to scrape diseased bone tissue.

[0013] Furthermore, the reciprocating mechanism includes a reciprocating frame and a drive block. The reciprocating frame includes a connecting block, which is provided with a U-shaped groove, a fixed through hole, and a connecting post. A first bearing is sleeved on the eccentric shaft, and the U-shaped groove is sleeved on the first bearing. The drive block is provided with an arc-shaped groove that matches the connecting post, and the arc-shaped groove is sleeved on the connecting post. A pin is inserted into the fixed through hole, and both ends of the pin are fixedly installed on the front housing.

[0014] Furthermore, the drive shaft is fitted with a support tube, which in turn is fitted with a water pipe. The water pipe is fitted with an outer tube, and the water pipe has an axial notch. A water outlet channel is formed between the support tube and the outer tube at the notch. The outer casing includes a front outer casing and an outer outer casing fixedly connected. The front outer casing has an insertion hole, and the outer tube is fixedly inserted into the insertion hole. The front outer casing has a water channel. A spiral water-cooling jacket is installed inside the outer outer casing. The spiral water-cooling jacket has a spiral groove, with a water inlet at one end and a water outlet at the other end. The water inlet, spiral groove, water outlet, water channel, and water outlet channel are sequentially connected to form a water-cooling channel. This configuration allows for water cooling of the entire scraper, with the injected water flowing out through the water outlet channel. It also allows for cooling of the blade head and wetting of the scraping area.

[0015] Furthermore, a second bearing is fitted onto the input shaft, and an interface housing is disposed within the spiral water-cooling jacket. The input shaft passes through the interface housing, and the outer ring of the second bearing is engaged with the inner wall of the interface housing. The inclusion of the second bearing makes the rotation of the input shaft smoother.

[0016] Furthermore, a stepped hole is provided at one end of the outer tube near the front housing, and a sealing sleeve is installed within the stepped hole. The end of the sealing sleeve is sealed to the inner wall of the front housing. A sleeve is fixedly fitted at one end of the input shaft, and the other end of the sleeve is fitted onto the end of the drive shaft. A rubber seal is provided between the drive shaft and the sealing sleeve. This design prevents water from entering the reciprocating mechanism.

[0017] The beneficial effects of this utility model are:

[0018] 1. The scraper head of this utility model has a second cutting edge on both sides of the axial cutting hole on the scraping part. With this setting, when performing bone scraping surgery, the first cutting edge is first cut into the bone tissue, and then during the scraping process, the second cutting edges on both sides can also tear the bone tissue on both sides, making the bone scraping process easier and more efficient.

[0019] 2. The scraping part of the scraper head of this utility model and the same side of the base are concave arc transition surfaces, and the side of the first cutting edge away from the connecting part is a bevel. With this design, interference with the lesion can be avoided during bone scraping surgery, and the bone scraping treatment effect is better.

[0020] 3. During bone scraping surgery, the scraper of this utility model is connected to an external motor. The motor drives the eccentric shaft to rotate eccentrically, which in turn drives the drive shaft and transmission shaft to move axially back and forth through the reciprocating mechanism. This, in turn, drives the scraper head to move back and forth to scrape the diseased bone tissue. The entire process is driven by the motor, resulting in high surgical efficiency.

[0021] 4. The water inlet, spiral groove, water outlet, water passage, and water outlet channel of this utility model are connected in sequence to form a water cooling channel; during surgery, external water can be injected to cool the entire scraper. The injected water flows out from the water outlet channel, which can also cool the blade head and moisten the scraping area, thereby improving the surgical stability and effectiveness of the scraper. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an orthopedic scraper head according to the present invention. Figure 1 ;

[0023] Figure 2 This is a three-dimensional structural diagram of an orthopedic scraper head according to the present invention. Figure 2 ;

[0024] Figure 3 This is a three-dimensional structural diagram of a reciprocating scraper according to the present invention;

[0025] Figure 4 for Figure 3 Exploded view;

[0026] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure;

[0027] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0028] Figure 7 for Figure 5 A magnified view of a section at point B in the middle;

[0029] Figure 8 for Figure 5 A magnified view of a section at point C;

[0030] Figure 9 for Figure 4 Schematic diagram of the middle connecting block;

[0031] Figure 10 for Figure 4 Schematic diagram of the middle driving block;

[0032] Figure 11 for Figure 4 Schematic diagram of the structure of the central spiral water-cooled jacket;

[0033] Figure 12 for Figure 4 Schematic diagram of the front and middle shell structure;

[0034] Figure 13 for Figure 4 A schematic diagram of the input shaft.

[0035] in,

[0036] Scraper head 1, base 101, connecting part 102, scraping part 103, scraping hole 104, first cutting edge 105, second cutting edge 106, arc-shaped transition surface 107, bevel 108, mounting hole 109.

[0037] 2. Drive shaft, 3. Sleeve, 4. Rubber seal, 5. Seal sleeve, 6. Drive shaft, 7. Front housing, 7. Insertion hole, 701. Water channel, 702. Interface housing, 8. Spiral water cooling jacket, 9. Spiral groove, 901. Water inlet groove, 902. Water outlet, 903. Outer housing, 10. Pin, 11. Reciprocating drive frame, 12. Connecting block, 1201. U-shaped groove, 1202. Fixing through hole, 1203. Connecting column, 1204. First bearing, 13. Second bearing, 14. Input shaft, 15. Eccentric shaft, 1501. Support tube, 16. Water channel, 17. Outer tube, 18. Drive block, 19. Arc groove, 20. Water outlet channel, 21. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings:

[0039] Example 1

[0040] This embodiment describes an orthopedic scraper head, such as... Figure 1 As shown, the device includes a base 101, a connecting portion 102 at the right end of the base 101, and a scraping portion 103 at the left end of the base 101. To facilitate the processing and production of the scraper head 1, the base 101, connecting portion 102, and scraping portion 103 in this embodiment are integrally formed. The scraping portion 103 has a shaving hole 104 in the middle. A first cutting edge 105 is provided on the edge of the shaving hole 104 on the left side of the scraping portion 103. The left side of the first cutting edge is a bevel 108. A second cutting edge 106 is provided on both sides of the axial edge of the shaving hole 104 on the scraping portion 103. The first cutting edge 105 and the second cutting edge 106 are located on the same side of the scraping portion 103. The height of the first cutting edge 105 is greater than the height of the second cutting edge 106. A mounting hole 109 is provided on the connecting portion 102, extending through the connecting portion 102 to the base 101. The mounting hole 109 is used to mount the drive shaft 2 on the scraper. When performing bone scraping surgery, the first cutting edge 105 is first inserted into the bone tissue. Then, during the scraping process, the second cutting edges 106 on both sides can also tear apart the bone tissue on both sides, making the bone scraping process easier and more efficient.

[0041] During bone scraping surgery, in order to avoid interference with the lesion location, the same side of the scraping part 103 and the base 101 is an inwardly concave arc-shaped transition surface 107, which is located on one side of the first cutting edge 105 and the second cutting edge 106.

[0042] Example 2

[0043] This embodiment is a reciprocating scraper, such as Figure 3-13As shown, the device includes a housing, a support rod assembly, a reciprocating mechanism, an interface assembly, and the scraper head 1 of Embodiment 1 described above. The housing includes a front housing 7 and an outer housing 10 connected by a snap-fit. The front housing 7 is provided with an insertion hole 701. The reciprocating mechanism and the interface assembly are both located inside the outer housing 10. The support rod assembly includes a drive shaft 2. The left end of the drive shaft 2 is inserted into the mounting hole 109 of the connecting part 102 and is fixedly connected to the connecting part 102. The right end of the drive shaft 2 is fixedly connected to a drive shaft 6, and the right end of the drive shaft 6 is connected to the reciprocating mechanism. The interface assembly includes an input shaft 15. The right end of the input shaft 15 is provided with a motor interface. The left end of the input shaft 15 is eccentrically and integrally formed with an eccentric shaft 1501, which is connected to the reciprocating mechanism.

[0044] like Figures 8-10 As shown, the reciprocating mechanism of this embodiment includes a reciprocating frame and a drive block 19. The reciprocating frame includes a connecting block 1201, which is provided with a U-shaped groove 1202, a fixed through hole 1203 and a connecting post 1204. A first bearing 13 is sleeved on the eccentric shaft 1501, and the U-shaped groove 1202 is sleeved on the first bearing 13. The drive block 19 is fixedly connected to the drive shaft 6. The drive block 19 is provided with an arc-shaped groove 20 that matches the connecting post 1204. The arc-shaped groove 20 is sleeved on the connecting post 1204. A pin 11 is inserted into the fixed through hole 1203, and both ends of the pin 11 are fixedly installed on the front housing 7.

[0045] like Figure 3-6 As shown, the drive shaft 2 is sleeved with a support tube 16, the support tube 16 is sleeved with a water passage pipe 17, and the water passage pipe 17 is sleeved with an outer tube 18. The outer tube 18 is fixedly inserted into the insertion hole 701. The water passage pipe 17 has a notch groove in its axial direction, and a water outlet channel 21 is formed between the support tube 16 and the outer tube 18 at the notch groove. Figure 11-12 As shown, a water channel 702 is provided on the front outer shell 7, and a spiral water cooling jacket 9 is provided inside the outer shell 10. The spiral water cooling jacket 9 is provided with a spiral groove 901. One end of the spiral water cooling jacket 9 is provided with a water inlet groove 902, and the other end is provided with a water outlet 909. The water inlet groove 902, the spiral groove 901, the water outlet 903, the water channel 702, and the water outlet channel 21 are connected in sequence to form a water cooling channel.

[0046] like Figure 8 As shown, a second bearing 14 is sleeved on the input shaft 15, and an interface housing 8 is provided inside the spiral water-cooling sleeve 9. The input shaft 15 passes through the interface housing 8, and the outer ring of the second bearing 14 is engaged with the inner wall of the interface housing 8. Figure 7As shown, a stepped hole is provided at the right end of the outer tube 18, and a sealing sleeve 5 is provided in the stepped hole. The end of the sealing sleeve 5 is sealed to the inner wall of the front housing 7. A sleeve 3 is fixedly sleeved on the left end of the input shaft 15, and the right end of the sleeve 3 is sleeved on the end of the drive shaft 2. A rubber seal 4 is provided between the drive shaft 2 and the sealing sleeve 5.

[0047] In this embodiment, during bone scraping surgery, the scraper is connected to an external motor via the input shaft 15. The motor drives the eccentric shaft 1501 to rotate eccentrically, which in turn drives the drive shaft 6 and transmission shaft 2 to reciprocate axially via a reciprocating mechanism. This, in turn, drives the scraper head 1 to reciprocate, scraping the diseased bone tissue. The entire process is driven by a motor, resulting in high surgical efficiency. This reciprocating drive principle is existing technology and will not be elaborated here. In addition, the water inlet 902, spiral groove 901, water outlet 903, water passage 702, and water outlet channel in this embodiment are sequentially connected to form a water-cooling channel. During surgery, external water can be injected to cool the entire scraper. The injected water flows out from the water outlet channel, which can also cool the blade head and moisten the scraped area, improving the surgical stability and effectiveness of the scraper.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A scraper head for orthopedics, characterized in that: The component includes a base, one end of which is provided with a connecting portion, and the other end of which is provided with a scraping portion; the scraping portion has a shaving hole in the middle, a first cutting edge is provided on the scraping portion away from the edge of the shaving hole, and at least one edge on both sides of the shaving hole on the scraping portion has a second cutting edge, and the first cutting edge and the second cutting edge are located on the same side of the scraping portion.

2. The orthopedic scraper head according to claim 1, characterized in that: The scraping part and the same side of the base are concave arc-shaped transition surfaces, which are located on one side of the first cutting edge and the second cutting edge.

3. The orthopedic scraper head according to claim 1, characterized in that: The base, connecting part, and scraping part are an integral structure.

4. The orthopedic scraper head according to claim 1, characterized in that: The height of the first cutting edge is greater than the height of the second cutting edge.

5. The orthopedic scraper head according to any one of claims 1-4, characterized in that: The side of the first cutting edge away from the connecting part is a bevel.

6. A reciprocating scraper, characterized in that: The device includes a housing, a support rod assembly, a reciprocating mechanism, an interface assembly, and a scraper head as described in any one of claims 1-5. The reciprocating mechanism and the interface assembly are both housed within the housing. The support rod assembly includes a drive shaft, one end of which is fixedly connected to a connecting portion, and the other end of which is fixedly connected to a drive shaft. The end of the drive shaft furthest from the drive shaft is connected to the reciprocating mechanism. The interface assembly includes an input shaft, one end of which has a motor interface, and the other end of which has an eccentric shaft eccentrically connected to the reciprocating mechanism.

7. A reciprocating scraper according to claim 6, characterized in that: The reciprocating mechanism includes a reciprocating frame and a drive block. The reciprocating frame includes a connecting block, which is provided with a U-shaped groove, a fixed through hole, and a connecting post. A first bearing is sleeved on the eccentric shaft, and the U-shaped groove is sleeved on the first bearing. The drive block is provided with an arc-shaped groove that matches the connecting post, and the arc-shaped groove is sleeved on the connecting post. A pin is inserted through the fixed through hole, and both ends of the pin are fixedly installed on the front housing.

8. A reciprocating scraper according to claim 7, characterized in that: The drive shaft is fitted with a support tube, which is fitted with a water pipe. The water pipe is fitted with an outer tube. The water pipe has an axial notch. A water outlet channel is formed between the support tube and the outer tube at the notch. The outer shell includes a front outer shell and an outer shell that are fixedly connected. The front outer shell has an insertion hole. The outer tube is fixedly inserted into the insertion hole. The front outer shell has a water groove. A spiral water cooling jacket is installed inside the outer shell. The spiral water cooling jacket has a spiral groove. One end of the spiral water cooling jacket has a water inlet groove, and the other end has a water outlet. The water inlet groove, spiral groove, water outlet, water groove, and water outlet channel are sequentially connected to form a water cooling channel.

9. A reciprocating scraper according to claim 8, characterized in that: The input shaft is fitted with a second bearing, and the spiral water-cooling jacket contains an interface housing. The input shaft passes through the interface housing, and the outer ring of the second bearing is engaged with the inner wall of the interface housing.

10. A reciprocating scraper according to claim 9, characterized in that: The outer tube has a stepped hole at one end near the front housing, and a sealing sleeve is installed in the stepped hole. The end of the sealing sleeve is sealed to the inner wall of the front housing. One end of the input shaft is fixedly fitted with a sleeve, and the other end of the sleeve is fitted to the end of the drive shaft. A rubber seal is provided between the drive shaft and the sealing sleeve.

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