Water-cooled surgical grinding head

Abstract

The present invention discloses a surgical water-cooled grinding head, comprising a grinding head (1), a support rod assembly and a cooling device, wherein a grinding handle is provided at one end of the grinding head (1), the grinding handle passes through the corresponding position of the support rod assembly and extends into a housing (3), the housing (33) is sleeved and fixed with the corresponding position of the cooling device, a mounting sleeve (53) and a motor are provided in the cooling device, the extending end of the grinding handle extends into the mounting sleeve (53) and is connected to the output end of the motor. The present invention drives the grinding head to rotate by a motor, cooling water flows into the support rod assembly through the cooling device, and flows out along the grinding handle to cool the grinding head, thereby performing the operation of grinding bone tissue, simplifying the mounting structure, reducing the weight, reducing the occupied space, and having high stability and good safety.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a water-cooled grinding head for surgery. Background Art

[0002] At present, in orthopedic surgery, grinding heads are often used to grind the surgical site of the bone. However, the grinding heads are prone to heat up when rotating at high speeds. When the grinding heads become hot, they will directly affect the grinding quality of the blade, that is, the grinding amount will be reduced, resulting in inadequate grinding, or the operation time will be increased. The heat will spread along the grinding handle. If the temperature is high, it will also cause other damage to the surgical site and affect the service life of the grinding component. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a surgical water-cooled grinding head which can cool the grinding head during bone tissue grinding surgery.

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

[0005] A surgical water-cooled grinding head comprises a grinding head, a support rod assembly and a cooling device, wherein a grinding handle is arranged at one end of the grinding head, the support rod assembly comprises an outer tube, a sleeve and a connecting tube, a shell is sleeved on the connecting tube, the grinding handle passes through the corresponding position of the support rod assembly and extends into the shell, the shell is sleeved and fixed with the corresponding position of the cooling device, a mounting sleeve and a motor are arranged in the cooling device, a fixing sleeve is sleeved in the mounting sleeve, the fixing sleeve is provided with a fixing hole, and the fixing hole is sleeved on the outer wall of the connecting tube; the grinding handle comprises a first bending section and a second bending section with the same diameter, a transition bending section is connected between the two bending sections, the first bending section and the second bending section extend into the outer tube, and the diameter of the transition bending section is smaller than the diameter of the first bending section; a guide rod is connected to the output end of the motor, a connecting tube is sleeved on the guide rod, and the second bending section extends into the fixing hole and is sleeved with the connecting tube; when in use, cooling water flows through the cooling device and the shell in sequence, enters the support rod assembly, and flows to the grinding head along the grinding handle to achieve the purpose of cooling the grinding head.

[0006] With the above structure, the grinding head is inserted into the outer tube and extends into the outer shell to be connected with the output end of the motor, and the corresponding position of the support rod assembly is sleeved with the outer shell. Therefore, the connection between the grinding head and the motor will not be affected by the outside world. At the same time, the cooling water passes through the cooling device and then passes through the support rod assembly to cool the front shell, the ring tube and the outer tube, and finally flows along the grinding handle to the working part of the grinding head, thereby reducing the temperature of the surgical site. During the operation, there is a special equipment to absorb the debris and blood formed by grinding, and the cooling water is also absorbed by the equipment and discharged, which will not affect the operation. Therefore, the rotation speed of the grinding handle can be appropriately increased, thereby shortening the operation time. The wound surface at the bone tissue grinding position is neat and stable, which can improve the treatment effect of bone tissue grinding or repair, and the wound recovers faster. It can also well control the sawing depth and width, and is convenient to operate and install.

[0007] In order to simplify the structure and facilitate the discharge of cooling water, preferably, a step hole is provided in the outer shell, a connecting through hole is provided at the small hole end of the step hole, the connecting pipe is sleeved in the connecting through hole, the outer wall of the connecting pipe and the inner wall of the small hole of the step hole form an annular cavity, and a water inlet hole connected to the annular cavity is provided on the connecting pipe; a sleeve is sleeved in the connecting pipe, an open groove is provided on one side of the sleeve, and the water inlet hole is connected to the open groove; an outer tube is sleeved in the sleeve, and a water outlet hole is provided at the position of the outer tube corresponding to the open groove, the grinding handle extends into the outer tube, the outer wall of the grinding handle and the inner wall of the outer tube form an annular water outlet groove, and the annular water outlet groove is connected to the water outlet hole.

[0008] In order to prevent leakage of cooling water, preferably, a first sealing ring is embedded in the fixing hole, and an inner side wall of the first sealing ring is in close contact with an outer wall of the second bending section.

[0009] In order to simplify the structure and facilitate the export of cooling water, preferably, the cooling device includes a water cooling jacket and a handle with a water injection hole, the handle is fixed on the outer wall of the motor, a connecting hole is provided on the handle, a pressing sleeve is sleeved on the outer side of the water cooling jacket, a groove is arranged around the outer wall of the water cooling jacket, a cooling water channel connected to the cavity structure is formed between the inner side wall of the pressing sleeve and the groove, and a notch is provided at one end of the water cooling jacket; a mounting sleeve is inserted into the large hole end of the step hole of the shell, a gap is left between the insertion end face of the mounting sleeve and the step surface of the step hole of the shell, forming a water groove connected to the notch, and the water groove is also connected to the annular cavity in the shell;

[0010] A circle of positioning grooves is provided on the outer wall of the shell, a step is provided on the handle, a connecting hole is provided in the middle of the step, and a water injection hole is provided on the step surface of the step, one end of the water cooling jacket is sleeved on the outer wall of the lower end of the step, and the other end is sleeved on the inner wall of the large hole end of the step hole of the shell, one end of the pressing sleeve is sleeved on the outer wall of the higher end of the step, and a circle of bosses is provided at the position corresponding to the positioning groove at the other end, and the bosses are snapped in the positioning groove; the step surface of the step, the corresponding position of the inner wall of the pressing sleeve and the end face of the sleeve end of the water cooling jacket form a water outlet groove connected with the water injection hole, and a transition groove is provided on the end of the water cooling jacket corresponding to the water outlet groove, one end of the transition groove is connected with the cooling water channel, and the other end is connected with the water outlet groove, and the cooling water flows into the water outlet groove from the water injection hole, flows into the cooling water channel through the transition groove, and then flows into the cavity structure through the notch and the water groove in sequence.

[0011] To facilitate installation, preferably, a step hole is provided in the water cooling jacket, and a mounting sleeve is provided in the step hole. One end of the mounting sleeve extends into the step hole and is sleeved in the connecting hole, and the outer wall of the other end is provided with a step structure adapted to the step hole. The step structure is embedded in the step hole position, and the step surfaces at the corresponding ends of the mounting sleeve and the step hole position abut against each other to limit the position.

[0012] In order to prevent leakage of cooling water, preferably, a groove is provided on the outer wall of the mounting sleeve, and a second sealing ring is embedded in the groove, and the outer wall of the second sealing ring is fitted and abutted with the corresponding position of the inner wall of the connecting hole; a third sealing ring is embedded on the inner wall of the water-cooling sleeve, and the inner wall of the third sealing ring is fitted and abutted with the corresponding position of the outer wall of the lower end of the stage to prevent cooling water from flowing into the motor position.

[0013] In order to facilitate the injection of cooling water, preferably, a water injection pipe is provided on the handle, and the water injection pipe is connected to the water injection hole.

[0014] For ease of installation, preferably, the grinding handle, outer tube, sleeve and connecting tube have the same bending curvature.

[0015] Beneficial effects: The present invention drives the grinding head to rotate by a motor, and cooling water flows into the support rod assembly through the cooling device and flows out along the grinding handle to cool the grinding head, thereby performing the operation of grinding bone tissue, simplifying the installation structure, reducing weight, reducing occupied space, and having high stability and good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the installation structure of the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of point A in .

[0018] Figure 3for Figure 1 Enlarged view of point B in .

[0019] Figure 4 for Figure 1 Enlarged view of point C in the figure.

[0020] Figure 5 for Figure 1 Enlarged view of point D in .

[0021] Figure 6 for Figure 1 Enlarged view of point E in FIG.

[0022] Figure 7 An exploded view of the grinding head and support rod assembly.

[0023] Figure 8 A schematic diagram of the structure of the shell.

[0024] Fig. 9 Schematic diagram of the structure of the water cooling jacket.

[0025] Fig.10 A schematic diagram of the structure of the handle.

[0026] Fig.11 It is a structural schematic diagram of the support rod assembly and the shell.

[0027] Fig.12 for Fig.11 The enlarged image of point F is obtained. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12As shown, the present invention includes a grinding head 1, a support rod assembly and a cooling device. A grinding handle is provided at one end of the grinding head 1. The support rod assembly includes an outer tube 2, a sleeve 21 and a connecting tube 22. A step hole is provided in the outer shell 3, and a connecting through hole 31 is provided at the small hole end of the step hole. The connecting tube 22 is sleeved in the connecting through hole 31, and the outer wall of the connecting tube 22 and the inner wall of the small hole of the step hole form an annular cavity. A water inlet 32 ​​connected to the annular cavity is provided on the connecting tube 22; a sleeve 21 is sleeved in the connecting tube 22, and an open groove is provided on one side of the sleeve 21, and the water inlet 32 ​​is connected to the open groove; an outer tube 2 is sleeved in the sleeve 21, and the grinding handle extends into the outer tube 2, and the outer wall of the grinding handle and the inner wall of the outer tube 2 form an annular water outlet groove, and a water outlet hole 23 connected to the annular water outlet groove is provided on the tube wall of the outer tube 2; the grinding handle, the outer tube 2, the sleeve 21 and the connecting tube 22 have the same bending curvature.

[0030] The cooling device includes a water cooling jacket 4 and a handle 41 with a water injection hole 412, wherein the water injection hole 412 is connected to a water injection pipe, the handle 41 is fixed on the outer wall of the motor, and a connecting hole 415 is provided on the handle 41, a pressing sleeve 5 is sleeved on the outer side of the water cooling jacket 4, and a groove 42 is arranged around the outer wall of the water cooling jacket 4, and a cooling water channel connected to the cavity structure is formed between the inner side wall of the pressing sleeve 5 and the groove 42, and a notch is provided at one end of the water cooling jacket 4; an installation sleeve 53 is inserted in the water cooling jacket 4, and the water cooling jacket 4 is inserted into the large hole end of the step hole of the outer shell 3, and a gap is left between the end face of the insertion end of the installation sleeve 53 and the step surface of the step hole of the outer shell 3, forming a water groove 331 connected to the notch, and the water groove 331 is also connected to the annular cavity in the outer shell 3.

[0031] A circle of positioning grooves 33 is provided on the outer wall of the shell 3, a step 411 is provided on the handle 41, a connecting hole 415 is provided in the middle of the step 411, a water injection hole 412 is provided on the step surface of the step 411, one end of the water cooling jacket 4 is sleeved on the outer wall of the lower end of the step 411, and the other end is sleeved on the inner wall of the large hole end of the step hole of the shell 3, one end of the pressing sleeve 5 is sleeved on the outer wall of the upper end of the step 411, and a circle of bosses is provided at the other end corresponding to the position of the positioning groove 33, and the boss card Buckled in the positioning groove 33; the step surface of the step 411, the corresponding position of the inner wall of the pressing sleeve 5 and the end face of the sleeve end of the water-cooling jacket 4 form a water outlet groove 413 connected with the water injection hole 412, and a transition groove 414 is provided at one end of the water-cooling jacket 4 corresponding to the water outlet groove 413, one end of the transition groove 414 is connected with the cooling water channel, and the other end is connected with the water outlet groove 413, the cooling water flows into the water outlet groove 413 from the water injection hole 412, flows into the cooling water channel through the transition groove 414, and then flows into the cavity structure through the notch and the water groove 331 in sequence.

[0032] A step hole is provided in the water cooling jacket 4, and a mounting sleeve 53 is provided in the step hole. One end of the mounting sleeve 53 extends into the step hole and is sleeved in the connecting hole 415, and the outer wall of the other end is provided with a step structure adapted to the step hole. The step structure is embedded in the step hole position, and the step surfaces at the corresponding ends of the mounting sleeve 53 and the step hole position abut against each other to limit the position.

[0033] A fixing sleeve 531 is sleeved in the installation sleeve 53, and the fixing sleeve 531 is provided with a fixing hole, and the fixing hole is sleeved on the outer wall of the connecting tube 22; the grinding handle includes a first bending section 11 and a second bending section 12 with the same diameter, and a transition bending section 13 is connected between the two bending sections, the first bending section 11 and the second bending section 12 extend into the outer tube 2, and the diameter of the transition bending section 13 is smaller than the diameter of the first bending section 11; the output end of the motor is connected to a guide rod 54, and a connecting tube 541 is sleeved on the guide rod 54, and the second bending section 12 extends into the fixing hole and is sleeved with the connecting tube 541.

[0034] A first sealing ring 61 is embedded in the fixing hole, and the inner wall of the first sealing ring 61 is in abutment with the outer wall of the second bending section 12; a groove is provided on the outer wall of the mounting sleeve 53, and a second sealing ring 62 is embedded in the groove, and the outer wall of the second sealing ring 62 is in abutment with the corresponding position of the inner wall of the connecting hole 415; a third sealing ring 63 is embedded on the inner wall of the water-cooling jacket 4, and the inner wall of the third sealing ring 63 is in abutment with the corresponding position of the outer wall of the lower end of the stage 411 to prevent cooling water from flowing into the motor position.

[0035] When in use, cooling water flows through the cooling device and the housing 3 in sequence, enters the support rod assembly, and flows along the grinding handle to the grinding head 1 to achieve the purpose of cooling the grinding head 1.

[0036] The method of use of the present invention is as follows:

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Fig.11 and Fig.12As shown, the grinding handle extends into the outer tube 2, the second bent section 12 passes through the outer tube 2 and extends into the outer shell 3, and the inserted end of the second bent section 12 extends into the fixing hole of the mounting sleeve 53 and is sleeved with one end of the connecting tube 541, and the other end of the connecting tube 541 is sleeved and fixed with the guide rod 54 connected to the output end of the motor; at the same time, a sleeve 21 is sleeved on the outer tube 2, and an open groove is provided on one side of the sleeve 21, and a connecting tube 22 is sleeved on the sleeve 21, and the connecting tube 22 is sleeved and fixed with the connecting through hole 31, and the outer wall of the grinding handle is sleeved with the outer tube 2. The inner wall forms an annular water outlet groove, the water cooling jacket 4 is sleeved in the large hole end of the step hole of the outer shell 3, and a gap is left between the end face of the sleeve end of the water cooling jacket 4 and the step surface of the step hole to form a water groove 331, which is connected to the annular cavity, and the connecting pipe 22 is provided with a water inlet hole 32 connected to the annular cavity; a water outlet hole 23 is provided at the position corresponding to the open groove on the outer tube 2, and the grinding handle extends into the outer tube 2, and the outer wall of the grinding handle and the inner wall of the outer tube 2 form an annular water outlet groove, and the annular water outlet groove is connected to the water outlet hole 23.

[0038] At the same time, if Figure 4 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 As shown, a press sleeve 5 is sleeved on the outer side of the water cooling jacket 4, one end of the press sleeve 5 is sleeved with the handle 41, and forms a closed cavity structure with the water outlet groove 413 to prevent the cooling water from leaking out; a groove 42 is wound around the outer wall of the water cooling jacket 4, and a cooling water channel connected to the cavity structure is formed between the inner side wall of the press sleeve 5 and the groove 42. In order to improve the cooling efficiency, a spiral groove 42 is provided on the outer wall of the water cooling jacket 4, that is, a spiral cooling water channel is formed together with the press sleeve 5, extending The length of time that water flows can improve the cooling efficiency; cooling water is injected from the water injection pipe (not marked), and the cooling water flows into the water outlet groove 413 from the water injection hole 412, flows into the cooling water channel through the transition groove 414, and then flows into the annular cavity through the gap and the water groove 331 in turn, and then flows into the annular water outlet groove through the water inlet hole 32 and the water outlet hole 23, and flows from the opening of the annular water outlet groove along the first bending section 11 of the grinding handle to the working part of the grinding head 1, and in the meantime, it can also cool the temperature of the outer shell 3, the outer tube 2, the sleeve 21 and the connecting tube 22.

[0039] In addition, during this process, the first sealing ring 61 embedded in the fixing hole can prevent the cooling water from flowing into the fixing hole of the mounting sleeve 53 along the gap between the second bending section 12 and the inner wall of the outer tube 2, thereby avoiding flowing into the motor position; a third sealing ring 63 is embedded on the inner wall of the water-cooling jacket 4, and the inner wall of the sealing ring 43 abuts against the corresponding position of the outer wall of the lower end of the stage 411, thereby sealing the water outlet trough 413; a second sealing ring 62 is provided on the outer wall of the mounting sleeve 53, thereby providing secondary anti-leakage protection for the water inlet direction, thereby ensuring the stability and safety of use during the operation.

[0040] The parts not described in the present invention are consistent with the prior art and will not be described in detail here.

[0041] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. A water-cooled surgical grinding head, characterized in that: The invention comprises a grinding head (1), a support rod assembly and a cooling device. A grinding handle is provided at one end of the grinding head (1). The support rod assembly comprises an outer tube (2), a sleeve (21) and a connecting tube (22). An outer shell (3) is sleeved on the connecting tube (22). The grinding handle passes through a corresponding position of the support rod assembly and extends into the outer shell (3). The outer shell (3) is sleeved and fixed to a corresponding position of the cooling device. A mounting sleeve (53) and a motor are provided in the cooling device. A fixing sleeve (531) is sleeved in the mounting sleeve (53). The fixing sleeve (531) is provided with a fixing hole. The fixing hole is sleeved on the outer wall of the connecting tube (22). The grinding handle comprises a first curved portion with the same diameter as the first curved portion. A bending section (11) and a second bending section (12), a transition bending section (13) is connected between the two bending sections, the first bending section (11) and the second bending section (12) extend into the outer tube (2), the diameter of the transition bending section (13) is smaller than the diameter of the first bending section (11); the output end of the motor is connected to a guide rod (54), a connecting tube (541) is sleeved on the guide rod (54), the second bending section (12) extends into the fixing hole and is sleeved on the connecting tube (541); when in use, cooling water flows through the cooling device and the outer shell (3) in sequence, enters the support rod assembly, and flows along the grinding handle to the grinding head (1), so as to achieve the purpose of cooling the grinding head (1).

2. The surgical water-cooled grinding head according to claim 1, characterized in that: The outer shell (3) is provided with a stepped hole, and a connecting through hole (31) is provided at the small hole end of the stepped hole. The connecting pipe (22) is sleeved in the connecting through hole (31), and the outer wall of the connecting pipe (22) and the inner wall of the small hole of the stepped hole form an annular cavity. The connecting pipe (22) is provided with a water inlet (32) connected to the annular cavity; a sleeve (21) is sleeved in the connecting pipe (22), and an open groove is provided on one side of the sleeve (21), and the water inlet (32) is connected to the open groove; an outer tube (2) is sleeved in the sleeve (21), and a water outlet (23) is provided at a position corresponding to the open groove on the outer tube (2); the grinding handle extends into the outer tube (2), and the outer wall of the grinding handle and the inner wall of the outer tube (2) form an annular water outlet groove, and the annular water outlet groove is connected to the water outlet hole (23).

3. The surgical water-cooled grinding head according to claim 1, characterized in that: A first sealing ring (61) is embedded in the fixing hole, and the inner side wall of the first sealing ring (61) is in close contact with the outer wall of the second bending section (12).

4. The surgical water-cooled grinding head according to claim 2, characterized in that: The cooling device comprises a water cooling jacket (4) and a handle (41) with a water injection hole, wherein the handle (41) is sleeved on the outer wall of the motor, and a connecting hole (415) is provided on the handle (41); a pressing sleeve (5) is sleeved on the outer side of the water cooling jacket (4), and a groove (42) is provided on the outer wall of the water cooling jacket (4); a cooling water channel connected to the annular cavity structure is formed between the inner wall of the pressing sleeve (5) and the groove (42); a notch is provided at one end of the water cooling jacket (4); an installation sleeve (53) is inserted into the water cooling jacket (4), and the water cooling jacket (4) is inserted into the large hole end of the step hole of the outer shell (3); a gap is left between the end surface of the insertion end of the installation sleeve (53) and the step surface of the step hole of the outer shell (3), forming a water groove (331) connected to the notch, and the water groove (331) is also connected to the annular cavity in the outer shell (3); A circle of positioning grooves (33) is provided on the outer wall of the shell (3), a step (411) is provided on the handle (41), a connecting hole (415) is provided in the middle of the step (411), a water injection hole (412) is provided on the step surface of the step (411), one end of the water cooling sleeve (4) is sleeved on the outer wall of the lower end of the step (411), and the other end is sleeved on the inner wall of the large hole end of the step hole of the shell (3), one end of the pressing sleeve (5) is sleeved on the outer wall of the upper end of the step (411), and the other end is provided with a circle of bosses at the position corresponding to the positioning groove (33), and the bosses are buckled. In the positioning groove (33), the step surface of the step (411), the corresponding position of the inner wall of the pressing sleeve (5) and the end surface of the sleeve end of the water cooling sleeve (4) form a water outlet groove (413) connected to the water injection hole (412). A transition groove (414) is provided at one end of the water cooling sleeve (4) corresponding to the water outlet groove (413). One end of the transition groove (414) is connected to the cooling water channel, and the other end is connected to the water outlet groove (413). Cooling water flows from the water injection hole (412) into the water outlet groove (413), flows into the cooling water channel through the transition groove (414), and then flows into the cavity structure through the notch and the water groove (331) in sequence.

5. The surgical water-cooled grinding head according to claim 4, characterized in that: A step hole is provided in the water cooling jacket (4), and a mounting sleeve (53) is provided in the step hole. One end of the mounting sleeve (53) extends into the step hole and is sleeved in the connecting hole (415), and an outer wall of the other end is provided with a step structure adapted to the step hole. The step structure is embedded in the step hole position, and the step surfaces at the corresponding ends of the mounting sleeve (53) and the step hole position abut against each other for limiting.

6. The surgical water-cooled grinding head according to claim 5, characterized in that: A groove is provided on the outer wall of the mounting sleeve (53), and a second sealing ring (62) is embedded in the groove. The outer wall of the second sealing ring (62) is fitted and abutted against the corresponding position of the inner wall of the connecting hole (415); a third sealing ring (63) is embedded on the inner wall of the water cooling sleeve (4), and the inner wall of the third sealing ring (63) is fitted and abutted against the corresponding position of the outer wall of the lower end of the stage (411) to prevent cooling water from flowing into the motor position.

7. The surgical water-cooled grinding head according to claim 4, characterized in that: A water injection pipe is provided on the handle (41), and the water injection pipe is connected to the water injection hole (412).

8. The surgical water-cooled grinding head according to claim 2, characterized in that: The grinding handle, the outer tube (2), the sleeve (21) and the connecting tube (22) have the same bending curvature.

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