TWI836701B - A driving device of a surgical cutting tool - Google Patents

Abstract

A driving device of a surgical cutting tool is used to solve the problem that the conventional driving device is easily blocked. Comprises: a shell with a hollow cylinder, the hollow cylinder has two openings, the two openings are respectively used for a front cover and a rear cover to be combined, the front cover has a through hole, the rear cover has several discharge holes, Each of the discharge holes is used for connecting the pumping parts; and a driving module is located in the shell, the driving module has a driving shaft driven to rotate by a power element, and the second end of the driving shaft protrudes from the through hole of the front cover, the second end of the drive shaft is connected to a collet, the collet is clamped by a plurality of clamping jaws for a tool, the drive shaft has a through channel, the through channel axially penetrates the drive shaft opposite two ends, the first end of the through channel faces the rear cover and is located in the hollow cylinder, and the second end of the through channel is aligned and communicates with the center of the chuck

Description

Driving device for surgical cutting tool

The present invention relates to a driving device, in particular to a driving device that drives a surgical cutting tool to rotate.

Radical surgery is one of the commonly used treatment methods at present, which is to achieve the purpose of treatment by removing the predetermined tissue. For example, the removal of tumors, the removal of necrotic tissues, or the removal of tissues seriously damaged by accidents. The cutting tool used for the above tissue removal has a saw-like blade, which is driven by a driving device with a built-in motor to rotate at high speed, so that the saw-like blade cuts the affected tissue to remove the affected tissue. The drive unit also generates suction through a built-in or external pump, and simultaneously removes the cut tissue debris. In this way, the worker can cut the tissue while removing the cut tissue to ensure the smoothness of the operation.

However, during the operation, the cut tissue debris often forms a blockage in the drive device, causing the surgeon to interrupt the operation from time to time to clear the blocked tissue debris, resulting in poor smoothness of the operation and delayed operation time.

In view of this, the known driving device of surgical cutting tools still needs to be improved.

In order to solve the above problems, the purpose of the present invention is to provide a driving device for a surgical cutting tool, which can remove the cut tissue debris smoothly.

Directionality or similar terms are used throughout the present invention, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "side", etc. mainly refer to the directions of the attached drawings. Each directionality or its approximate terms are only used to assist in explaining and understanding the various embodiments of the present invention, and are not intended to limit the present invention.

The quantifiers "one" or "a" used in the components and parts described in the present invention are only for the convenience of use and to provide a general meaning of the scope of the present invention; they should be interpreted in the present invention as including one or at least one, and the single concept also includes the plural case, unless it is obvious that it means otherwise.

The similar terms such as "combination", "assembly" or "assembly" mentioned in the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable, which can be selected by those with ordinary knowledge in the field according to the materials of the components to be connected or the assembly requirements.

The driving device of the surgical cutting tool of the present invention includes: a housing with a hollow cylinder. The hollow cylinder has two openings. The two openings are respectively used for combining a front cover and a back cover. The front cover has a through hole. , the back cover has several discharge holes, each of which is used for connecting a liquid extraction part; and a drive module located in the housing, the drive module has a drive shaft driven to rotate by a power element, the drive module A second end of the drive shaft protrudes from the through hole of the front cover. The second end of the drive shaft is connected to a chuck. The chuck holds a tool with a plurality of jaws. The drive shaft has a through channel. , the through channel axially penetrates the opposite ends of the drive shaft, a first end of the through channel faces the back cover and is located in the hollow cylinder, and a second end of the through channel is aligned and connected to the chuck center.

Accordingly, the driving device of the surgical cutting tool of the present invention has several discharge holes on the rear cover, or several liquid outlets on the liquid suction tube, and each of the discharge holes or each of the liquid outlets can be connected to a pump or other liquid suction component, and the liquid suction component can be used to suck tissue debris and liquid in the hollow cylinder or the through channel of the driving shaft. In this way, there are more discharge channels, and suction can be formed on the through channel respectively, so that the tissue debris removed by the tool can be sucked out by the liquid suction component, which can prevent the tissue debris cut by the tool from clogging the through channel, and can avoid the interruption of the operation caused by the blockage of tissue debris, and can achieve the effect of improving the smoothness of the operation.

There is a fixing seat in the hollow cylinder, and the first end of the drive shaft passes through the fixing seat and is located in the hollow cylinder. In this way, the fixing seat can be used to prevent tissue debris and liquid from entering the power element and to stably support the rotation of the drive shaft.

Wherein, there is a water retaining ring between the second end of the drive shaft and the through hole. In this way, the water blocking ring can be used to block the opening of the housing, which has the effect of preventing liquid during surgery from entering the housing.

The drive shaft is supported by at least one bearing. Thus, the drive shaft can achieve stable rotation relative to the housing.

The driving device of the surgical cutting tool of the present invention may further include a liquid suction tube, which has a liquid suction port and several liquid discharge ports. The liquid suction port is connected to the first end of the through channel, and the several liquid discharge ports are respectively located at each of the discharge holes of the rear cover and are connected to the liquid extraction member. In this way, the liquid extraction member can directly suck and discharge the tissue debris in the through channel through the liquid suction tube.

The diameter of the liquid suction port is larger than the outer diameter of the first end of the driving shaft, and the first end of the driving shaft extends into the liquid suction port. In this way, the liquid suction port and the first end of the driving shaft have a more closely fitting suction effect.

There is an O-ring between the outer wall of the first end of the driving shaft and the inner wall of the liquid suction port. Thus, the liquid suction port and the first end of the driving shaft have a more close suction effect.

The liquid suction tube has a liquid suction port and two liquid outlets. The liquid suction port is located at the first end of the liquid suction tube and connected to the first end of the through-channel. The second end of the liquid suction tube is fixed to the rear cover by a positioning element. In this way, the liquid suction member can directly suck and discharge the tissue debris in the through-channel through the liquid suction tube.

Wherein, the liquid suction pipe has two branch openings, the two branch openings are radially opposite, one end of the two branch pipes is respectively connected to the two branch openings, and the other end of the two branch pipes forms the two liquid outlets. In this way, the tissue debris can be diverted and dispersed in two opposite directions to reduce the agglomeration of tissue debris and avoid tissue debris clogging in the suction pipe, and the system can improve tissue debris. The smooth flow of chips.

Wherein, the two liquid outlets are respectively connected to the discharge hole or the liquid suction member. In this way, the liquid suction member can directly suck and discharge the tissue debris in the through channel through the liquid suction pipe member.

1: Shell

11: Hollow cylinder

12: Front cover

13:Back cover

14:Through hole

15: Water retaining ring

16: discharge hole

2:Drive module

21: Drive shaft

22: Knives

23: Power components

24: Bearings

25: Clips

26: Clamping claws

27:Through the passage

28: Fixed seat

3: Suction pipe fittings

31:Suction port

32:Liquid outlet

33:O-ring

34: Positioning components

35: Diversion port

36: Shunt pipe

P: Liquid extraction parts

S: Positioning component

[Figure 1] A cross-sectional view of the first preferred embodiment of the present invention.

[Figure 2] A cross-sectional view of the second preferred embodiment of the present invention.

[Figure 3] A perspective view of the second preferred embodiment of the present invention.

In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments of the present invention are illustrated below and described in detail with reference to the accompanying drawings; in addition, the same symbols are used in different drawings. are considered to be the same and their description will be omitted.

Please refer to Figure 1, which is a first embodiment of a driving device for a surgical cutting tool of the present invention. It includes a housing 1, a driving module 2 and at least one liquid extraction part P. The driving module 2 is located at The housing 1 is used to drive a driving shaft 21 to drive a tool 22 to rotate (as shown in Figure 3). The liquid extraction part P is used to remove tissue debris cut by the cutter 22 .

The housing 1 may have a hollow cylinder 11 with two openings so that the driving module 2 can be installed in the hollow cylinder 11 . The two openings of the housing 1 can be combined with a front cover 12 and a rear cover 13 respectively. The front cover 12 and the back cover 13 can be coupled to the two ends of the housing 1 by snapping or screw locking. This invention is not limited. In this embodiment, the front cover 12 and the back cover are 13 is fixed on both ends of the housing 1 by positioning elements S, so that the front cover 12 and the back cover 13 can be easily disassembled, assembled with the drive module 2, and cleaned with the hollow cylinder 11. The front cover 12 has a through hole 14, and the back cover 13 has a plurality of discharge holes 16. Each of the discharge holes 16 can be connected to a pipe fitting connected to a pump or a liquid pumping part P such as a pump, and the liquid pumping part P can be used for suction. Tissue debris and liquid located in the hollow cylinder 11.

The drive module 2 is located in the hollow cylinder 11. The drive module 2 has a drive shaft 21. The drive shaft 21 can be driven to rotate by a power element 23. The power element 23 can be a known inner rotor motor. The drive shaft 21 can be supported by at least one bearing 24 so that the drive shaft 21 can rotate stably relative to the housing 1. Preferably, the hollow cylinder 11 can also have a fixed seat 28. The fixed seat 28 can be fixed to the hollow cylinder by a positioning element S such as a bolt. 11, and the first end of the drive shaft 21 passes through the fixing seat 28 and extends into the hollow cylinder 11; the second end of the drive shaft 21 extends from the through hole 14 of the front cover 12, preferably, there is a water baffle 15 between the second end and the through hole 14; the second end of the drive shaft 21 is connected to a chuck 25, and the chuck 25 can be a chuck of a known machine tool, and can be clamped and fixed by a plurality of clamping claws 26, which is understandable to those skilled in the art, and the present invention will not be elaborated here.

The drive shaft 21 has a through channel 27, which axially penetrates the two opposite ends of the drive shaft 21, so that the second end of the through channel 27 can be aligned and connected to the center of the chuck 25, and the first end of the through channel 27 faces the rear cover 13 and is located in the hollow cylinder 11, thereby, the tissue debris and liquid cut by the tool 22 can be guided to the hollow cylinder 11 through the through channel 27, and can be sucked out by a pump or other liquid extraction component P through the discharge holes 16 of the rear cover 13.

Please refer to Figures 2 and 3, which shows a second embodiment of a driving device for a surgical cutting tool of the present invention. In this embodiment, the driving device further has a suction tube 3, and the suction tube 3 has a The liquid suction port 31 and the liquid outlet 32 are connected to the first end of the through channel 27. In this embodiment, the diameter of the liquid suction port 31 can be larger than the first end of the driving shaft 21. The outer diameter of the drive shaft 21 allows the first end of the drive shaft 21 to extend into the liquid suction port 31. Preferably, there is a gap between the outer wall of the first end of the drive shaft 21 and the inner wall of the liquid suction port 31. The O-ring 33 allows the driving shaft 21 to rotate smoothly relative to the liquid suction port 31 without leakage; the liquid outlets 32 are respectively aligned with the discharge holes 16 of the back cover 13 and can be connected to the liquid suction port. The parts P are connected, so that the liquid-sucking part P can suck the tissue debris and liquid located in the through-channel 27 from each of the liquid outlets 32. In this way, there are more discharge channels, and the through-channels 27 can be respectively sucked. The channel 27 forms a suction force to prevent the tissue debris cut by the tool 22 from clogging the through channel 27, thereby improving the smoothness of the flow of the tissue debris.

In this embodiment, the liquid suction pipe 3 has a liquid suction port 31 and two liquid outlets 32. The liquid suction port 31 is located at the first end of the liquid suction pipe 3. The liquid suction port 31 is connected to The first end of the through channel 27 and the second end of the liquid suction pipe 3 can be fixed to the back cover 13 by a positioning element 34. The liquid suction pipe 3 has two branching openings 35, and the two branching openings 35 can be formed into Diametrically opposite, one end of the two branch pipes 36 is connected to the two branch openings 35 respectively, the other end of the two branch pipes 36 forms the two liquid outlets 32, and the two liquid outlets 32 are respectively connected to the discharge hole 16 or The liquid suction part P creates suction force. Thereby, tissue debris can be sucked out from the two liquid outlets 32 . It is worth noting that by shunting and sucking out tissue debris from radially opposite sides of the two shunt tubes 36, the tissue debris can be shunted and dispersed in two opposite directions to reduce tissue debris. The agglomeration of debris can prevent tissue debris from clogging in the suction pipe 3, thereby improving the smoothness of the flow of tissue debris.

Please continue to refer to Figure 3. The tool 22 is a hollow tube body. When the tool 22 is combined with the chuck 25, the hollow part of the tool 22 can be located in the center of the chuck 25, and the The hollow portion of the tool 22 can be communicated with the through channel 27 of the drive shaft 21 . In this way, when the driving device of the surgical cutting knife of the present invention is used, the driving module 2 can drive the knife 22 to rotate at a high speed, so that the blade of the knife 22 can cut the tissue to be removed. At the same time, through the suction provided by the pump, the tissue debris cut by the blade can enter the through channel 27 of the drive shaft 21 and enter the hollow cylinder 11 or the suction pipe 3, and the The tissue debris can be sucked out by the liquid extraction part P, which can prevent the tissue debris cut by the knife 22 from blocking the through channel 27, so that the operation can be carried out smoothly.

In summary, the driving device of the surgical cutting tool of the present invention has several discharge holes on the rear cover, or several liquid outlets on the liquid suction tube, and each of the discharge holes or each of the liquid outlets can be connected to a pump or other liquid suction component, and the liquid suction component can be used to suck tissue debris and liquid in the hollow cylinder or the through channel of the driving shaft. In this way, there are more discharge channels, and suction can be formed on the through channel respectively, so that the tissue debris removed by the tool can be sucked out by the liquid suction component, which can prevent the tissue debris cut by the tool from clogging the through channel, and can avoid the interruption of the operation caused by the blockage of tissue debris, and can achieve the effect of improving the smoothness of the operation.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, they are not intended to limit the invention. Anyone skilled in the art can make various changes and modifications to the above-described embodiments without departing from the spirit and scope of the invention. The technical scope protected by the invention, therefore, the protection scope of the invention shall include all changes within the literal and equivalent scope described in the appended patent application scope.

1: Shell

11: Hollow cylinder

12: Front cover

13:Back cover

14:Through hole

15: Water retaining ring

16: Discharge hole

2: Driver module

21: Drive shaft

23: Power components

24:Bearing

25:Chuck

26: Clamping claws

27: Channel

28: Fixed seat

P: Liquid extraction parts

S: Positioning component

Claims (10)

A driving device for a surgical cutting tool comprises: a housing having a hollow cylinder having two openings, the two openings being respectively connected to a front cover and a rear cover, the front cover having a through hole, the rear cover having a plurality of discharge holes, each of the discharge holes being connected to a liquid extraction member; and a driving module located in the housing, the driving module having a driving shaft driven by a power element. Rotate, a second end of the drive shaft extends out of the through hole of the front cover, the second end of the drive shaft is connected to a chuck, the chuck clamps a tool by a plurality of clamping claws, the drive shaft has a through channel, the through channel axially penetrates the two opposite ends of the drive shaft, a first end of the through channel faces the rear cover and is located in the hollow cylinder, and a second end of the through channel is aligned and connected to the center of the chuck. The driving device of the surgical cutting tool of claim 1, wherein the hollow cylinder has a fixed seat, and the first end of the driving shaft passes through the fixed seat and is located in the hollow cylinder. The driving device of the surgical cutting tool of claim 1, wherein there is a water retaining ring between the second end of the driving shaft and the through hole. A driving device for a surgical cutting tool as claimed in claim 1, wherein the driving shaft is supported by at least one bearing. If the driving device of the surgical cutting tool according to any one of claims 1 to 4 further includes a suction pipe, the suction pipe has a suction port and several liquid outlets, and the suction port is connected to the through channel. At the second end, the liquid outlets are respectively aligned with the discharge holes on the back cover and are connected with the liquid suction member. As in claim 5, the driving device of the surgical cutting tool, wherein the diameter of the liquid suction port is larger than the outer diameter of the first end of the driving shaft, and the first end of the driving shaft extends into the liquid suction port. The driving device of a surgical cutting tool as claimed in claim 5, wherein there is an O-ring between the outer wall of the first end of the drive shaft and the inner wall of the suction port. As in claim 5, the driving device of the surgical cutting tool, wherein the liquid pipette has a liquid suction port and two liquid outlets, the liquid suction port is located at the first end of the liquid pipette and connected to the first end of the through channel, and the second end of the liquid pipette is fixed to the rear cover by a positioning element. As in claim 8, the driving device of the surgical cutting tool, wherein the pipette has two branch ports, the two branch ports are radially opposite, one end of the two branch pipes is respectively connected to the two branch ports, and the other end of the two branch pipes forms the two liquid outlets. As claimed in claim 9, the driving device of a surgical cutting tool, wherein the two liquid outlets are respectively connected to the discharge hole or the liquid suction member.

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