Water-cooled circular saw

Abstract

The present invention discloses a water-cooled circular saw, which comprises an outer tube, a circular saw body arranged at one end of the outer tube, and a handle arranged at the other end of the outer tube. The circular saw body includes a saw cylinder, a sawtooth ring is arranged at one end of the saw cylinder, a saw handle sleeved with the outer tube is arranged at the other end of the saw cylinder, and a water outlet hole communicating with the sawtooth ring is arranged on the saw handle; A handle is sleeved on the outer periphery of the outer tube, a water inlet hole is arranged on the handle, a support rod assembly is arranged in the outer tube, a water outlet channel is surrounded and arranged among the handle, the outer tube and the support rod assembly, and a drain hole communicating with the water outlet channel is arranged at the corresponding position of the support rod assembly. The present invention is provided with a saw cylinder with a sawtooth ring, and the position of the sawtooth ring is cooled by cooling water through the water outlet channel, and thus the operation of osteotomy treatment is carried out. The structure is simple, the operation is convenient, the installation structure is simplified, the weight is reduced, and the safety is good.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a water-cooled circular saw. Background Art

[0002] When performing osteotomy operations in surgical procedures, traditional manual circular saws usually use columnar saw heads for grinding in a full-angle rotation form. During the grinding process, it is inconvenient to observe the surgical position, resulting in poor control of the force, low efficiency, making it difficult to remove the bone tissue with relatively poor toughness around the surgical position, and it is also easy to damage the relatively tough soft tissue around. After breaking through the bone plate, it is easy to damage the soft tissue under the bone plate. Moreover, rotating in the same direction easily causes bone chips to accumulate, and the excised bone tissue is not easy to remove from the circular saw, affecting the quality of cutting use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a water-cooled circular saw that is convenient to hold and used for osteotomy surgery.

[0004] The technical solution of the present invention is as follows:

[0005] A water-cooled circular saw includes an outer tube, a circular saw body provided at one end of the outer tube, and a handle provided at the other end of the outer tube. The circular saw body includes a saw cylinder. A sawtooth ring is provided at one end of the saw cylinder, and a saw handle sleeved with the outer tube is provided at the other end of the saw cylinder. A water outlet hole communicating with the sawtooth ring is provided on the saw handle; A handle is sleeved on the outer periphery of the outer tube. An inlet hole is provided on the handle. A first stepped hole communicating with the inlet hole is provided on the handle. A support rod assembly is provided in the outer tube. The large hole end of the first stepped hole is fixedly sleeved with the outer tube. A fixing hole is provided at the bottom of the small hole end of the first stepped hole. A first sleeve is provided in the first stepped hole. A second stepped hole is provided in the first sleeve; The support rod assembly includes a connecting pipe sleeved in the outer tube. One end of the outer wall of the connecting pipe is sleeved with the saw handle, and the other end is sleeved with a second sleeve. One end of the second sleeve extends into the large hole end of the second stepped hole, and the other end is fixedly sleeved with the fixing hole. The small hole end of the second stepped hole is sleeved on the outer wall of the connecting pipe; A transmission device is provided on the connecting pipe at the sleeved position of the second sleeve and the fixing hole;

[0006] The corresponding positions of the inner wall of the small hole end of the first stepped hole and the outer side wall of the first sleeve enclose a first water storage cavity. The corresponding positions of the outer side wall of the first sleeve, the outer side wall of the connecting pipe, and the inner wall of the hole of the outer tube enclose a second water storage cavity communicating with the first water storage cavity. A drain hole communicating with the second water storage cavity is provided on the connecting pipe, and the drain hole is communicated with the water outlet hole.

[0007] With the above structure, a saw cylinder with a serrated ring is provided, which is convenient for rotating and cutting or grinding bone tissue. The saw cylinder is connected by a saw handle and an outer tube. A support rod assembly is provided inside the outer tube. While the support rod assembly is connected to a handle with a water inlet hole, a water outlet channel is formed by enclosing the handle, the outer tube and the support rod assembly. Moreover, a drain hole communicating with the water outlet channel is provided at the corresponding position of the support rod assembly, and the drain hole is also communicated with the water outlet hole on the saw handle. In this way, the cooling water can flow from the water inlet hole, the water outlet channel and the drain hole to the water outlet hole. According to the flow rate, the cooling water flowing out of the water outlet hole can directly reach the position of the serrated ring or flow along the saw cylinder to the position of the serrated ring. While achieving the purpose of cooling, it can also help collect surgical residues, clean the wound, ensure that the sawing wound surface is neat and stable, improve the treatment effect of bone tissue grinding or repair, make the wound recover faster, and is convenient to operate and install.

[0008] To simplify the transmission structure and facilitate installation, preferably, the transmission device includes an input eccentric shaft and a reciprocating frame. An installation through hole is provided inside the handle, and a first bearing is embedded in the installation through hole. The input end of the input eccentric shaft passes through the first bearing, and the output end of the input eccentric shaft is provided with an eccentric shaft extending horizontally outwards; the reciprocating frame includes a connecting block. One end of the connecting block is provided with a "U" - shaped groove, and the other end is provided with a connecting shaft fixedly sleeved with a connecting pipe. A second bearing is vertically provided in the "U" - shaped groove of the connecting block. The outer wall of the second bearing fits with the groove wall of the "U" - shaped groove, and the central through hole of the second bearing is fixedly sleeved on the eccentric shaft.

[0009] To facilitate observing the surgical position and collecting bone residues at the same time, preferably, an opening is provided on one side of the saw cylinder.

[0010] To prevent slipping and facilitate inputting cooling water, preferably, an anti - slip sleeve is sleeved on the handle, and a water inlet pipe communicating with the water inlet hole is provided on the anti - slip sleeve.

[0011] Beneficial effects: The present invention provides a saw cylinder with a serrated ring, and the cooling water cools the position of the serrated ring through the water outlet channel, and thus the operation of bone cutting treatment is carried out. The structure is simple, the operation is convenient, the installation structure is simplified, the weight is reduced, and the safety is good. Description of the Drawings

[0012] Figure 1 It is an exploded view of the structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the installation structure of the present invention.

[0014] Figure 3 It is Figure 2 The enlarged view of part A in

[0015] Figure 4 It is a schematic diagram of the structure of the saw cylinder.

[0016] Figure 5 It is a schematic structural diagram of the outer tube.

[0017] Figure 6 It is a schematic structural diagram of the first sleeve.

[0018] Figure 7 It is a schematic structural diagram of the connecting block.

[0019] Figure 8 It is a usage state diagram of the reciprocating frame. Detailed implementation manners

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] As Figures 1 to 8 shown, the present invention includes an outer tube 2, a circular saw body provided at one end of the outer tube 2, and a handle 5 provided at the other end of the outer tube 2. The circular saw body includes a saw cylinder 1. A sawtooth ring 12 is provided at one end of the saw cylinder 1, and a saw handle 11 sleeved with the outer tube 2 is provided at the other end of the saw cylinder 1. A water outlet hole 13 communicating with the middle of the sawtooth ring 12 is provided on the saw handle 11; an opening is provided on one side of the saw cylinder 1.

[0022] A handle 5 is sleeved on the outside of the outer tube 2. A first stepped hole 52 communicating with the water inlet hole 51 is provided on the handle 5. The large hole end of the first stepped hole 52 is sleeved and fixed with the outer tube 2. A fixing hole 511 is provided at the bottom of the small hole end of the first stepped hole 52. A first sleeve 22 is provided in the first stepped hole 52. A second stepped hole 54 is provided in the first sleeve 22; a support rod assembly is provided in the outer tube 2. The support rod assembly includes a connecting pipe 21 sleeved in the outer tube 2. One end of the outer wall of the connecting pipe 21 is sleeved with the saw handle 11, and the other end is sleeved with a second sleeve 23. One end of the second sleeve 23 extends into the large hole end of the second stepped hole 54, and the other end is sleeved and fixed with the fixing hole 511. The small hole end of the second stepped hole 54 is sleeved on the outer wall of the connecting pipe 21.

[0023] The corresponding positions of the inner wall of the small hole end of the first stepped hole 52 and the outer side wall of the first sleeve 22 surround and form a first water storage cavity 31. The corresponding positions of the outer side wall of the first sleeve 22, the outer side wall of the connecting pipe 21, and the inner wall of the hole of the outer tube 2 surround and form a second water storage cavity 32 communicating with the first water storage cavity 31. A drain hole 33 communicating with the second water storage cavity 32 is provided on the connecting pipe 21, and the drain hole 33 is communicated with the water outlet hole 13.

[0024] A transmission device is provided at the socket position of the second sleeve 23 and the fixing hole 511 corresponding to the connecting pipe 21. The transmission device includes an input eccentric shaft 53 and a reciprocating frame. An installation through hole is provided in the handle 5, and a first bearing 531 is embedded in the installation through hole. The input end of the input eccentric shaft 53 passes through the first bearing 531, and the output end of the input eccentric shaft 53 is provided with an eccentric shaft 532 extending horizontally outwards; the reciprocating frame includes a connecting block 533. One end of the connecting block 533 is provided with a "U" - shaped groove, and the other end is provided with a connecting shaft 534 sleeved and fixed to the connecting pipe 21. A second bearing 521 is vertically provided in the "U" - shaped groove of the connecting block 533. The outer wall of the second bearing 521 fits with the groove wall of the "U" - shaped groove, and the central through hole of the second bearing 521 is sleeved and fixed on the eccentric shaft 532.

[0025] An anti - slip sleeve 50 is sleeved on the handle 5, and a water inlet pipe 501 communicating with the water inlet hole 51 is provided on the anti - slip sleeve 50.

[0026] The usage method of the present invention is as follows:

[0027] As Figures 1 to 8 shown, start the motor (not labeled). The input eccentric shaft 53 drives the eccentric shaft 532 to rotate. The eccentric shaft 532 is sleeved with a second bearing 521. The second bearing 521 is sleeved in the "U" - shaped groove of the reciprocating frame, and the outer wall of the second bearing 521 fits with the groove wall of the "U" - shaped groove. The eccentric rotation of the eccentric shaft 532 drives the second bearing 521 to slide in the groove, thus driving the reciprocating frame to make left - and - right reciprocating movements in the circumferential direction (i.e., Figure 8 the clockwise and counter - clockwise directions shown in states a and b in ). That is, the connecting pipe 21 drives the saw - tooth ring 12 to make reciprocating rotations. When the saw cylinder 1 is held vertically or obliquely, the bone tissue at the osteotomy treatment position is evenly stressed, the sawing wound surface is neat and stable, the treatment of the bone tissue will be more stable, the treatment effect of bone tissue grinding or repair can be improved, the wound will recover faster, and the sawing depth and width can also be well controlled.

[0028] Meanwhile, as Figures 2 to 5 shown, cool water is input from the water inlet pipe 501. The cool water flows into the first water - containing cavity 31 and the second water - containing cavity 32 through the water inlet hole 51, and then flows into the cavity of the connecting pipe 21 through the drain hole 33, and then directly flows to the position of the saw - tooth ring 12 through the water outlet hole 13, or can also flow to the position of the saw - tooth ring 12 along the saw cylinder 1. During this process, the cool water cools the connecting pipe 21, the saw handle 11, the saw cylinder 1 and the saw - tooth ring 12 together.

[0029] In addition, the saw cylinder 1 is cylindrical, and an opening is provided on the saw cylinder 1. Firstly, it is convenient to observe the surgical position situation from the middle of the saw - tooth ring. Secondly, the inner wall of the saw cylinder 1 also forms a structure of an arc - shaped groove, which is convenient for collecting and taking out bone residues to meet the needs of the operation.

[0030] It should be noted that, as Figure 2 and Figure 3 shown, the cooling water enters the connecting pipe 21 through the drain hole 33 and is discharged through the water outlet hole 13. In order to prevent the cooling water from flowing into the handle 5, the outer diameter dimension of the connecting shaft 534 is adapted to the inner diameter dimension of the connecting pipe 21. While ensuring fixed sleeving, the sealing performance of the installation should also be ensured.

[0031] The parts not described in the present invention are the same as those in the prior art and will not be elaborated herein.

Claims

1. A water-cooled circular saw, characterized in that: It includes an outer tube (2), a circular saw body provided at one end of the outer tube (2), and a handle (5) provided at the other end of the outer tube (2). The circular saw body includes a saw cylinder (1). A sawtooth ring (12) is provided at one end of the saw cylinder (1), and a saw handle (11) sleeved with the outer tube (2) is provided at the other end of the saw cylinder (1). A water outlet hole (13) communicating with the sawtooth ring (12) is provided on the saw handle (11); A handle (5) is sleeved on the outer periphery of the outer tube (2). A water inlet hole (51) is provided on the handle (5), and a first stepped hole (52) communicating with the water inlet hole (51) is provided on the handle (5). A support rod assembly is provided in the outer tube (2). The large hole end of the first stepped hole (52) is sleeved and fixed with the outer tube (2). A fixing hole (511) is provided at the bottom of the small hole end of the first stepped hole (52). A first sleeve (22) is provided in the first stepped hole (52), and a second stepped hole (54) is provided in the first sleeve (22); The support rod assembly includes a connecting pipe (21) sleeved in the outer tube (2). One end of the connecting pipe (21) is sleeved with the saw handle (11), and the other end is sleeved with a second sleeve (23). One end of the second sleeve (23) extends into the large hole end of the second stepped hole (54), and the other end is sleeved and fixed with the fixing hole (511). The small hole end of the second stepped hole (54) is sleeved on the outer wall of the connecting pipe (21); A transmission device is provided on the connecting pipe (21) at the corresponding position of the socket joint of the second sleeve (23) and the fixing hole (511). The corresponding positions of the inner wall of the small hole end of the first stepped hole (52) and the outer side wall of the first sleeve (22) enclose a first water storage cavity (31). The corresponding positions of the outer side wall of the first sleeve (22), the outer side wall of the connecting pipe (21), and the inner hole wall of the outer tube (2) enclose a second water storage cavity (32) communicating with the first water storage cavity (31). A drain hole (33) communicating with the second water storage cavity (32) is provided on the connecting pipe (21); The corresponding position of the support rod assembly is connected with the handle (5). A water outlet channel is enclosed between the handle (5), the outer tube (2), and the support rod assembly. A drain hole (33) communicating with the water outlet channel is provided at the corresponding position of the support rod assembly. The drain hole (33) is communicated with the water outlet hole (13).

2. The water-cooled circular saw according to claim 1, characterized in that: The transmission device includes an input eccentric shaft (53) and a reciprocating frame. An installation through-hole is provided in the handle (5), and a first bearing (531) is embedded in the installation through-hole. The input end of the input eccentric shaft (53) passes through the first bearing (531), and an eccentric shaft (532) extending horizontally outward is provided at the output end of the input eccentric shaft (53); the reciprocating frame includes a connecting block (533). One end of the connecting block (533) is provided with a "U"-shaped groove, and the other end is provided with a connecting shaft (534) sleeved and fixed with a connecting pipe (21). A second bearing (521) is vertically provided in the "U"-shaped groove of the connecting block (533). The outer wall of the second bearing (521) fits against the groove wall of the "U"-shaped groove, and the central through-hole of the second bearing (521) is sleeved and fixed on the eccentric shaft (532).

3. The water-cooled circular saw according to claim 1, wherein: An opening is provided on one side of the saw cylinder (1).

4. The water-cooled circular saw according to claim 1, characterized in that: An anti-slip sleeve (50) is sleeved on the handle (5), and a water inlet pipe (501) communicating with the water inlet hole (51) is provided on the anti-slip sleeve (50).

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